Subtract 21/56 from 42/12
1st number: 3 6/12, 2nd number: 21/56
42/12 - 21/56 is 25/8.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 12 and 56 is 168
Next, find the equivalent fraction of both fractional numbers with denominator 168 - For the 1st fraction, since 12 × 14 = 168,
42/12 = 42 × 14/12 × 14 = 588/168 - Likewise, for the 2nd fraction, since 56 × 3 = 168,
21/56 = 21 × 3/56 × 3 = 63/168 - Subtract the two like fractions:
588/168 - 63/168 = 588 - 63/168 = 525/168 - After reducing the fraction, the answer is 25/8
- In mixed form: 31/8
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