Subtract 7/64 from 7/90
7/90 - 7/64 is -91/2880.
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,
7/90 = 7 × 32/90 × 32 = 224/2880 - Likewise, for the 2nd fraction, since 64 × 45 = 2880,
7/64 = 7 × 45/64 × 45 = 315/2880 - Subtract the two like fractions:
224/2880 - 315/2880 = 224 - 315/2880 = -91/2880
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