Subtract 21/56 from 72/40
1st number: 1 32/40, 2nd number: 21/56
72/40 - 21/56 is 57/40.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 40 and 56 is 280
Next, find the equivalent fraction of both fractional numbers with denominator 280 - For the 1st fraction, since 40 × 7 = 280,
72/40 = 72 × 7/40 × 7 = 504/280 - Likewise, for the 2nd fraction, since 56 × 5 = 280,
21/56 = 21 × 5/56 × 5 = 105/280 - Subtract the two like fractions:
504/280 - 105/280 = 504 - 105/280 = 399/280 - After reducing the fraction, the answer is 57/40
- In mixed form: 117/40
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