Subtract 9/21 from 64/28
1st number: 2 8/28, 2nd number: 9/21
64/28 - 9/21 is 13/7.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 28 and 21 is 84
Next, find the equivalent fraction of both fractional numbers with denominator 84 - For the 1st fraction, since 28 × 3 = 84,
64/28 = 64 × 3/28 × 3 = 192/84 - Likewise, for the 2nd fraction, since 21 × 4 = 84,
9/21 = 9 × 4/21 × 4 = 36/84 - Subtract the two like fractions:
192/84 - 36/84 = 192 - 36/84 = 156/84 - After reducing the fraction, the answer is 13/7
- In mixed form: 16/7
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