Subtract 20/24 from 9/28
9/28 - 20/24 is -43/84.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 28 and 24 is 168
Next, find the equivalent fraction of both fractional numbers with denominator 168 - For the 1st fraction, since 28 × 6 = 168,
9/28 = 9 × 6/28 × 6 = 54/168 - Likewise, for the 2nd fraction, since 24 × 7 = 168,
20/24 = 20 × 7/24 × 7 = 140/168 - Subtract the two like fractions:
54/168 - 140/168 = 54 - 140/168 = -86/168 - After reducing the fraction, the answer is -43/84
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