In algebra what is the answer to 9-3x=15-4x. Please explain how you got the answer.?
94205
@Start:\n9-3x = 15-4x\n@Subtract 9 from both sides:\n-3x = 15-9 -4x\n-3x = 6-4x\n@Add 4x to both sides\n-3x + 4x = 6\nx = 6\n\n@always check your answer:\n9-3*6 = 15 - 4*6\n9-18 = 15-24\n-9 = -9\n\nYep!
1006262
Rearrange the equation so that the variable (in this case x) appear on one side and rest on the other.\n3x + 4 = 9 - 2x\n3x+2x +4 = 9-2x+2x  [adding 2x to both sides]\n5x + 4 = 9\n5x +4-4 = 9-4 [subtracting 4 from both sides]\n5x = 5 \n5x /5 = 5/5 [deviding both sides by 5]\nx = 1
364629
I am sorry that I can't explain how, but the steps and the answer is here... (6x)(5x+2)(3x-1)\n\n90x^3+6x^2-12x \n6 (15x^3+x^2-2x)\n6x (15x^2+x-2)\n(6x) (5x+2)(3x-1)\n\nTo check 5x*3x=15x^2, 2*3x=6x, 5x*-1=-5x,2*-1=-2, so\n15x^2+6x-5x-2, take out 5x out of 6x and you get 1x.\n\nThen multiply 6x across the whole formula.
787725
To solve a problem like that:\n\n2x-3+4x = 10 (i'm not sure if this is your answer but I'm using it as an example)\n\nFirst combine the x's on the left side to get 6x-3 = 10\n\nThen add 3 to both sides to cancel the 3 on the left side.  You will not have 6x = 10.\n\nDivide both sides by 6 to isolate the x.  You will now have x = 10/6 (or 5/3)
653372
6x - 4x -3x = 5x becomes 6x - (4x -3x) = 5x\n6x - 4x -3x=`x I'm not sure about this one.  Is it supposed to be 6x - 4x -3x = -x? then it would be (6x-4x) - 3x = -x\n7 + 5p - p = 11p becomes (7 + 5)p - p = 11p\n7 + 5p - p = 7 becomes 7 + 5(p - p) = 7\n7 + 5p - p = 7 + 4p becomes 7 + (5p - p) = 7 + 4p\nYou do not actually need parentheses for the previous one.\n7 + 5p - p = 0 I cannot figure this one out.  Is something typed wrong?
1137313
=> 14x -8+5-9x=1-3x\n=> 14x-9x+3x=1+8-5\n=> 8x=4\n=> x=4/8=1/2=0.5\n\nCHEERS!
921258
5x - 15\n3x -  9 \n\n5 ( x - 3 )\n3 ( x - 3 )  = 5/3\n\nx^2+7x+10\nx^2+11x+30\n\n( x + 5 ) ( x + 2 )\n( x + 5 ) ( x + 6 )   =   (x+2)/(x+6)
172253
6x= -15-3\n6x= -18\nx= -18/6\nx= -3
458594
you subtract like terms.  \n5x^2 - 9x^2 = -4x^2\n-3x - (-5x) = -3x+5x = 2x\n6 - (-3) = 6+3 = 9\n\nTherefore, the final answer is -4x^2 +2x +9
909145
easy. distribute everything first.\n\nassuming the "." is a typo\n\n-3x - 3 = 2x -16 + 3\n\n-3x = 2x -10\n\n5x = 10\n\nx = 2
272177
multiply both sides by 3 and you'll get\n3x-3*4=-2*(y-9)\n\n3x-12=-2y+18\n-2y+18=3x-12\n-2y=3x-12-18\n-2y=3x-30  divide both sides by -2\n\ny = (-3/2)x + 15
941643
3/(5x)=-4\n3=-20x\n-3/20 = x\n-0.15 =x
881943
I see what you did -- you added 3x + x to get 4x, but you knew your answer had to have a square, so you made it 4x².  Then you added 8+5 to get 13, for a final answer of 4x̍ + 13.\n\nThat's not how to do these.  You need to multiply here, not add.\n\nUse a method called FOIL - which stands for First, Outside, Inside, Last.  I will demonstrate it for you with your problem:\n\n(3x+8)(x+5)\n\nF - multiply the FIRST terms of each parentheses:\n\n3x * x = 3x²\n\nO - multiply the OUTSIDE terms of each parentheses:\n\n3x * 5 = 15x\n\nI - multiply the INSIDE terms of each parentheses:\n\n8 * x = 8x\n\nL - multiply the LAST terms of each parentheses:\n\n8 * 5 = 40\n\nNow that you've done the FOIL multiplication, you can add up your terms, as follows:\n\n3x² + 15x + 8x + 40\n\nFinally, combine your like terms (the 15x and 8x) to get your final answer:\n\n3x² + 23x + 40\n\nHope that helped!\n\n~ ♥ ~
843360
get the x's on one side and the numbers on the other.\n\nto do that -- perform the opposite operation to each part you want to move on BOTH sides of the equation ..\n\n3x + 3 = 15 - x\n3x (+ x) +3 = 15 - x (+ x)  ---- adding x to both sides\n4x + 3 = 15\n4x + 3 (- 3) = 15 (- 3) ---- subtract 3 from both sides\n4x = 12\n\nI'll bet you can do the last operation in your head ... just divide by 4 and you have your answer to x!
762880
5 + 4 - 7 = 4x + 3 - x\n 9 - 7 = 3x + 3\n2 = 3x + 3\n2 - 3 = 3x + 3 - 3\n -1 = 3x\n-1/3 = 3x/3\n-1/3 = x
1024120
3x-5(3x-7)=2(x+9)+45\n\n3x-15x+35=2x+18+45 (distributive law)\n\n3x-15x-2x=18+45-35(put variable on left side, numbers on right side)\n\n-14x=28 (collect like terms)\n\nx=-2 (divide both sides by -14)\n\nhope that helped :)
741209
-2x-3 > 4x+7 .... subtract 7 from both sides, you get...\n-2x-10 > 4x   ..... then add 2x to both sides, and you get...\n-10 > 6x       ...... multiply both sides by 1/6....\n-10/6 > x    ..... flip it around and reduce....\n-5/3 > x  OR  x < -5/3    \n\nx is less than or equal to -5/3\n\nYou can double check your answer.  Pick a number less than x, such as -2 (which is less that -5/3).  Plug it in.  You get...\n-2(-2) - 3 = 4-3 = 1\n4(-2) + 7 = -8+7 = -1\nand 1 is greater than -1, so it works!