Subtract 70/64 from 2/21
1st number: 2/21, 2nd number: 1 6/64
2/21 - 70/64 is -671/672.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 21 and 64 is 1344
Next, find the equivalent fraction of both fractional numbers with denominator 1344 - For the 1st fraction, since 21 × 64 = 1344,
2/21 = 2 × 64/21 × 64 = 128/1344 - Likewise, for the 2nd fraction, since 64 × 21 = 1344,
70/64 = 70 × 21/64 × 21 = 1470/1344 - Subtract the two like fractions:
128/1344 - 1470/1344 = 128 - 1470/1344 = -1342/1344 - After reducing the fraction, the answer is -671/672
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