Subtract 7/64 from 42/90
42/90 - 7/64 is 343/960.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 90 and 64 is 2880
Next, find the equivalent fraction of both fractional numbers with denominator 2880 - For the 1st fraction, since 90 × 32 = 2880,
42/90 = 42 × 32/90 × 32 = 1344/2880 - Likewise, for the 2nd fraction, since 64 × 45 = 2880,
7/64 = 7 × 45/64 × 45 = 315/2880 - Subtract the two like fractions:
1344/2880 - 315/2880 = 1344 - 315/2880 = 1029/2880 - After reducing the fraction, the answer is 343/960
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