Subtract 7/28 from 21/8
1st number: 2 5/8, 2nd number: 7/28
21/8 - 7/28 is 19/8.
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,
21/8 = 21 × 7/8 × 7 = 147/56 - Likewise, for the 2nd fraction, since 28 × 2 = 56,
7/28 = 7 × 2/28 × 2 = 14/56 - Subtract the two like fractions:
147/56 - 14/56 = 147 - 14/56 = 133/56 - After reducing the fraction, the answer is 19/8
- In mixed form: 23/8
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