Subtract 21/28 from 15/8
1st number: 1 7/8, 2nd number: 21/28
15/8 - 21/28 is 9/8.
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,
15/8 = 15 × 7/8 × 7 = 105/56 - Likewise, for the 2nd fraction, since 28 × 2 = 56,
21/28 = 21 × 2/28 × 2 = 42/56 - Subtract the two like fractions:
105/56 - 42/56 = 105 - 42/56 = 63/56 - After reducing the fraction, the answer is 9/8
- In mixed form: 11/8
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