Subtract 2/3 from 21/56
21/56 - 2/3 is -7/24.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 56 and 3 is 168
Next, find the equivalent fraction of both fractional numbers with denominator 168 - For the 1st fraction, since 56 × 3 = 168,
21/56 = 21 × 3/56 × 3 = 63/168 - Likewise, for the 2nd fraction, since 3 × 56 = 168,
2/3 = 2 × 56/3 × 56 = 112/168 - Subtract the two like fractions:
63/168 - 112/168 = 63 - 112/168 = -49/168 - After reducing the fraction, the answer is -7/24
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