how to solve subtracting negative fractions?
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When subtracting negative fractions, you are, in effect, adding the positive complement of the negative fraction you are subtracting, because subtracting a negative number or fraction is the same as adding the positive of that negative fraction or number.
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['As a negative improper fraction (|numerator| > |denominator|): - 12/5 = - 12/5', 'As a mixed number. (a whole number and a proper fraction, of the same sign): - 12/5 = - 2 2/5', 'As a percentage: - 12/5 = - 240%']
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['Now count backwards 3 units. So keep counting back three spaces from -2 on the number line.', 'The answer is -2 – 3 = -5.']
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['Find the least common denominator.', 'Make equivalent fractions using the LCD.', 'Add or subtract the numerators.', 'Simplify the result if necessary.']
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['Check the denominators.', 'If denominators are unlike, make common denominators.', 'Look at the sign.', 'Add/Subtract just the numerators.', 'Simplify your answer.']
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Then stick the negative sign to your answer. When subtracting negative fractions, you are, in effect, adding the positive complement of the negative fraction you are subtracting, because subtracting a negative number or fraction is the same as adding the positive of that negative fraction or number.
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Just be sure to follow the rules of multiplying and dividing negative numbers to find all factors of negative numbers. For example, the factors of -6 are (1, -6), (-1, 6), (2, -3), (-2, 3).
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When you subtract complex numbers, you first need to distribute in the minus sign into the second complex number. Then, regroup the terms so like terms are next to each other. Combine those like terms, and you have the answer!
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Subtracting fractions from whole numbers isn't as hard as it looks. There are two main ways to go about it: you can either convert the whole number into a fraction, or subtract 1 from that whole number and convert the 1 into a fraction with the same base as the fraction you're subtracting from it.
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['Find the Lowest Common Denominator (LCD) of the fractions.', 'Rename the fractions to have the LCD.', 'Subtract the numerators of the fractions.', 'The difference will be the numerator and the LCD will be the denominator of the answer.', 'Simplify the Fraction.']
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['Rewrite the equation as in "Keep, Change, Flip"', 'Keep the first fraction.', 'Change the division sign to multiplication.', 'Flip the second fraction by switching the top and bottom numbers.', 'Multiply all numerators together.', 'Multiply all denominators together.', 'Reduce the result to lowest terms.']
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Rule 3: Subtracting a negative number from a negative number – a minus sign followed by a negative sign, turns the two signs into a plus sign. So, instead of subtracting a negative, you are adding a positive. Basically, - (-4) becomes +4, and then you add the numbers. ... This would read “negative two minus negative 4”.
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To subtract a larger number from a smaller one, switch the order of the numbers, do the subtraction, then add a negative sign to the answer. For example, to solve the binary problem 11 - 100, solve for 100 - 11 instead, then add a negative sign to the answer.
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To square a fraction, simplify the fraction as much as you can. Next, multiply the numerator by itself, then multiply the denominator by itself. If you are squaring a negative fraction, the result will be positive.
11690
When subtracting fractions from whole numbers, you need to change the whole number into a fraction. You then need to make a common denominator and then you can subtract the two numerators and you're all set.
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['KEEP the sign of the first number the same.', 'CHANGE subtraction to addition.', 'CHANGE the sign of the second number to the opposite, positive becomes negative, negative becomes positive.']
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Since you're trying to subtract a larger fraction from a smaller one, you need to "borrow" a one from the integer 4, change it to 15/15, and add it to the fraction. Now the problem becomes 3 20/15 minus 3 9/15 and the answer is 11/15.