Write each fraction in terms of the LCM of the denominators: 5 , x?
438560
__5 _ , x____\n9 – x2 6x+ 18\nI'll take a shot at what I think you are asking.  Is it write each of these two fractions: 5 over 9 minus x squared, and x over 6x + 18?\n\nIf so, factor each denominator: (I'll use x^2 for x squared)\n9-x^2 = (3+x)(3-x)\n6x+18 = 6(x+3)\n\nNote: x+3 = 3+x, so...\n\nThey share a factor of (x+3) so the LCD is 6(x+3)(3-x)\n\nFirst fraction missing 6, so multiply top & bottom by 6\nSecond is missing (3-x) so multiply top & bottom by (3-x)\n\nFirst: 30 over (6(x+3)(3-x))\nSecond: (3x-x^2) over (6(x+3)(3-x))
796326
I'll just tell you enough and then you do the rest.\n\nEach of them involves a number which is a mixture of whole number and fraction.  First step is to exress it as an improper fraction, e.g.\n2) 3 5/8 = 24/8 + 5/8\n             = 29/8  \n(simple rule is \n(denominator*whole number + numerator)/denominator)\nLikewise 2 1/2 = 5/2\n\nI expect you can do\n(1/2)*(29/8)*(5/2)\n\n3) Same idea for 4 1/5, only extra thing to know is that to divide by 14 you multiply by 1/14.\n\nCheers
796039
(5 * 5 * 5 - 5) / 5 + 5 * 5
68481
ok when adding fractions you find the common denominator on the bottom #s of the fraction then when you have the common denominator you see how much each goes into and add them\n\n1  3\n2  4 so them u go 2 goes into 4 (2 x) then x # by 1\n+\n3  3\n4  4   so 4 goes into 4 once, then x 3 = 3\n\nthen you add 3+3=6 so answer is 6\n                                4\nu do same with subtracting fraction but in the end instead of adding the top #s you subtract
777051
6=3*2\n7=7*1\n12=2*2*3\nso the LCM=2*3*7*2=84
824298
The LCM is the lowest (or least) number which contains all of the prime factors contained in each of the given numbers, so you need to factor each number out:\n12 = 2 X 2 X 3\n20 = 2 X 2 X 5\n35 = 5 X 7\n\nSo you need 2, 2, 3, 5, and 7\n2 X 2 X 3 X 5 X 7 = 420\n\nIt's 420.  Smoke 'em if you got 'em!
885409
A number that can be written as a fraction.
785494
Got a graphing calculator? To find LCM, hit MATH, and then move your arrow over to NUM. Press 8 and then just punch in 375, and a comma, and then 50. Hit enter and voila! 750 is your answer!
907037
Re: ³√(5/2)\n\nIf you need an approximation it is (5/2)^(1/3) on your calculator (as stated above)\n\nIf you want it exactly then you can write it as ³√(5/2) (also as stated above)\n\nIf you want to express it exactl;y BUT with a rational denominator then:\n\n³√(5/2) = ³√5 / ³√2 * ³√(2²) / ³√(2²) \n= ³√20/³√(2³)\n= ½ ³√20
96822
E. None of the above.\n\n1/10 + 1/4 + 1/5 + 2/5.\n\nUse 20 as the common denominator.\n\n2/20 + 5/20 + 4/20 + 8/20 = 19/20.\n\n19/20 is not one of the answers.
935141
Let's say you have 5 2/3. You'd multiply 5 by 3  and add that number to the numerator to get 17/3. Say you're adding that you 6 1/5 to that. 6 1/5 is 31/5. 31/5+17/3 is the same as 93/15+85/15 so it's 93+85=178 as the new numerator. You never add the denominator. So your answer is 178/15. To simplify that, you find how many times 178 goes into 15. It goes in 11 times and 15*11 is 165. There are 13 left over so the final answer is 11 13/15. Here are the steps more clearly written.\n\n1. Multiply the whole number by the denominator and add that product into the numerator to make it a single fraction. \n\n2. Find a common denominator and convert both fractions into fractions with that denominator. \n\n3. Add the fractions together. Find how many times the numerator goes into the denominator. That is your new whole number. What ever is remainding is your numerator. Simplify that fraction.\n\n4. Good luck!
965696
Two add two fractions, the denominators must be equal.\n\nThe first step is to convert the addend that is a mixed number (an integer plus a proper fraction) into an improper fraction. Do this by multiplying the integer part by the denominator and then add the numerator of the fraction.\n\nExpress the result as an improper fraction (fraction with value greater than 1) whose numerator is the sum you just calculated and whose denominator is the same as the denominator of the fraction part of the mixed number.\n\nFor example: 2/3 + 4 2/5 = 2/3 + 22/5\n\nNext, find the least common denominator of these two fractions, the smallest integer that contains both denominators as factors. For the example above, this is 15. Multiple both terms by (3*5)/15, which equals 1, and therefore does not change the value of the fraction:\n\n(2/3) * (3*5)/(15) = 10/15 (the 3's "cancel out" since 3/3 = 1)\n(22/5) * (3*5)/(15) = 66/15 (the 5's "cancel out" since 5/5 = 1)\n\nNow add 10/15 + 66/15 by adding the numerators and keeping the same denominator: 76/15.\n\nFinally, express this improper fraction as a mixed number by dividing: 5 1/15
100703
Find the lowest common denominator.\nThe lowest common denominator is 20.\n\nAdd the increment hours together.\n5 plus 4 is 9.\n\nDivide the lowest common denominator by the increments.\n20 divided by 9 is 2.22222.\n\nSo the answer is 2.22222 hours.
776941
-25 < 5(w + 3)\n-25< 5w +15\n-40< 5w\n-8<w\n\n-9q + 18 -3 > 6q\n15 > 15q\n1> q\n\n\n19 < 7 + 1/3k + 2 -2/3k\nmultiply by 3 to get rid of denominators\n57 < 21 +k +6 -2k\n30< -1k\ndivide by -1\n-30<k
780468
The only thing I can come up with off the top of my head is that you can use least common factors to determine the lowest common denominator for adding/subtracting fractions.  For example, 2/15 + 5/36 ... the lowest common denominator is 3*5*3*2*2 = 180 (using the least common factors of 15 = 3*5 and 36 = 3*3*2*2).  Not terribly "real life" but a "real application" nonetheless.
497547
First I'm assuming this is the sum of two fractions:\nx/(5x+10) + (x-3)/(x+2) = 7/5\n\nFactor out a 5 from the denominator of the first:\nx/5(x+2) + (x-3)/(x+2) = 7/5\n\nNow multiply both sides by (x+2):\nx/5 + (x-3) = 7(x+2)/5\n\nNow multiply both sides by 5:\nx + 5(x-3) = 7(x+2)\n\nDistribute the 5 and the 7:\nx + 5x - 15 = 7x + 14\n\nAdd x + 5x:\n6x - 15 = 7x + 14\n\nGroup like terms:\n-7x + 6x = 14 + 15\n-x = 29\nx = -29\n\nBut let's check our answer:\n-29/(5(-29)+10) + (-29-3)/(-29+2) = 7/5\n-29/(-145+10) + (-32)/(-31) = 7/5\n29/135 + 32/31 = 7/5\n29/135 + 160/135 = 7/5\n189/135 = 7/5\n7*27/5*27 = 7/5\n7/5 = 7/5\n\nSo the correct answer is x = -29
475633
Isolate X by subtracting 5/8 from both sides\n\nx + 5/8 - 5/8 = 2/3 - 5/8\n\nx = 2/3 - 5/8 find the common denomonater  In this case 24 is the lowest number that both denomonaters are divisible by. so...\n\n2/3 = 16/24\n\n5/8 = 15/24\n\nx = 16/24 - 15/24\n\nx = 1/24