Subtract 15/28 from 21/8
1st number: 2 5/8, 2nd number: 15/28
21/8 - 15/28 is 117/56.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 8 and 28 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 28 × 2 = 56,
15/28 = 15 × 2/28 × 2 = 30/56 - Subtract the two like fractions:
147/56 - 30/56 = 147 - 30/56 = 117/56 - In mixed form: 25/56
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