Subtract 15/56 from 21/12
1st number: 1 9/12, 2nd number: 15/56
21/12 - 15/56 is 83/56.
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,
21/12 = 21 × 14/12 × 14 = 294/168 - Likewise, for the 2nd fraction, since 56 × 3 = 168,
15/56 = 15 × 3/56 × 3 = 45/168 - Subtract the two like fractions:
294/168 - 45/168 = 294 - 45/168 = 249/168 - After reducing the fraction, the answer is 83/56
- In mixed form: 127/56
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