Subtract 7/56 from 21/8
1st number: 2 5/8, 2nd number: 7/56
21/8 - 7/56 is 5/2.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 8 and 56 is 56
Next, find the equivalent fraction of both fractional numbers with denominator 56 - For the 1st fraction, since 8 × 7 = 56,
21/8 = 21 × 7/8 × 7 = 147/56 - Likewise, for the 2nd fraction, since 56 × 1 = 56,
7/56 = 7 × 1/56 × 1 = 7/56 - Subtract the two like fractions:
147/56 - 7/56 = 147 - 7/56 = 140/56 - After reducing the fraction, the answer is 5/2
- In mixed form: 21/2
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