Subtract 20/64 from 1/7
1/7 - 20/64 is -19/112.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 7 and 64 is 448
Next, find the equivalent fraction of both fractional numbers with denominator 448 - For the 1st fraction, since 7 × 64 = 448,
1/7 = 1 × 64/7 × 64 = 64/448 - Likewise, for the 2nd fraction, since 64 × 7 = 448,
20/64 = 20 × 7/64 × 7 = 140/448 - Subtract the two like fractions:
64/448 - 140/448 = 64 - 140/448 = -76/448 - After reducing the fraction, the answer is -19/112
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