Subtract 21/64 from 84/42
1st number: 2 0/42, 2nd number: 21/64
84/42 - 21/64 is 107/64.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 42 and 64 is 1344
Next, find the equivalent fraction of both fractional numbers with denominator 1344 - For the 1st fraction, since 42 × 32 = 1344,
84/42 = 84 × 32/42 × 32 = 2688/1344 - Likewise, for the 2nd fraction, since 64 × 21 = 1344,
21/64 = 21 × 21/64 × 21 = 441/1344 - Subtract the two like fractions:
2688/1344 - 441/1344 = 2688 - 441/1344 = 2247/1344 - After reducing the fraction, the answer is 107/64
- In mixed form: 143/64
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