Subtract 21/24 from 15/56
15/56 - 21/24 is -17/28.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 56 and 24 is 168
Next, find the equivalent fraction of both fractional numbers with denominator 168 - For the 1st fraction, since 56 × 3 = 168,
15/56 = 15 × 3/56 × 3 = 45/168 - Likewise, for the 2nd fraction, since 24 × 7 = 168,
21/24 = 21 × 7/24 × 7 = 147/168 - Subtract the two like fractions:
45/168 - 147/168 = 45 - 147/168 = -102/168 - After reducing the fraction, the answer is -17/28
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