Subtract 16/56 from 3/21
3/21 - 16/56 is -1/7.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 21 and 56 is 168
Next, find the equivalent fraction of both fractional numbers with denominator 168 - For the 1st fraction, since 21 × 8 = 168,
3/21 = 3 × 8/21 × 8 = 24/168 - Likewise, for the 2nd fraction, since 56 × 3 = 168,
16/56 = 16 × 3/56 × 3 = 48/168 - Subtract the two like fractions:
24/168 - 48/168 = 24 - 48/168 = -24/168 - After reducing the fraction, the answer is -1/7
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