Subtract 12/4 from 21/56
1st number: 21/56, 2nd number: 3 0/4
21/56 - 12/4 is -21/8.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 56 and 4 is 56
Next, find the equivalent fraction of both fractional numbers with denominator 56 - For the 1st fraction, since 56 × 1 = 56,
21/56 = 21 × 1/56 × 1 = 21/56 - Likewise, for the 2nd fraction, since 4 × 14 = 56,
12/4 = 12 × 14/4 × 14 = 168/56 - Subtract the two like fractions:
21/56 - 168/56 = 21 - 168/56 = -147/56 - After reducing the fraction, the answer is -21/8
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