SAT Math : How to subtract fractions

Study concepts, example questions & explanations for SAT Math

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Example Questions

Example Question #1 : How To Subtract Fractions

Which fraction has a value greater than that of X?

Possible Answers:

Correct answer:

Explanation:

First, start by putting changing the fractions in the equation so that they have the same denominator.

Then, you can easily subtract the numerators. The denominator stays the same at this point:

At this point, you can reduce the fraction by dividing the numerator and the denominator by :

Then, to easily compare the fraction to the answer choices, you can change the fraction to a decimal:

By changing the answer choices to decimals as well, you can easily figure out which value is greater than :

, so  is the correct answer.

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