Subtract 21/7 from 12/56
1st number: 12/56, 2nd number: 3 0/7
12/56 - 21/7 is -39/14.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 56 and 7 is 56
Next, find the equivalent fraction of both fractional numbers with denominator 56 - For the 1st fraction, since 56 × 1 = 56,
12/56 = 12 × 1/56 × 1 = 12/56 - Likewise, for the 2nd fraction, since 7 × 8 = 56,
21/7 = 21 × 8/7 × 8 = 168/56 - Subtract the two like fractions:
12/56 - 168/56 = 12 - 168/56 = -156/56 - After reducing the fraction, the answer is -39/14
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