Subtract 63/21 from 72/56
1st number: 1 16/56, 2nd number: 3 0/21
72/56 - 63/21 is -12/7.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 56 and 21 is 168
Next, find the equivalent fraction of both fractional numbers with denominator 168 - For the 1st fraction, since 56 × 3 = 168,
72/56 = 72 × 3/56 × 3 = 216/168 - Likewise, for the 2nd fraction, since 21 × 8 = 168,
63/21 = 63 × 8/21 × 8 = 504/168 - Subtract the two like fractions:
216/168 - 504/168 = 216 - 504/168 = -288/168 - After reducing the fraction, the answer is -12/7
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