Subtract 72/21 from 9/56
1st number: 9/56, 2nd number: 3 9/21
9/56 - 72/21 is -183/56.
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,
9/56 = 9 × 3/56 × 3 = 27/168 - Likewise, for the 2nd fraction, since 21 × 8 = 168,
72/21 = 72 × 8/21 × 8 = 576/168 - Subtract the two like fractions:
27/168 - 576/168 = 27 - 576/168 = -549/168 - After reducing the fraction, the answer is -183/56
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