Subtract 63/64 from 4/90
4/90 - 63/64 is -2707/2880.
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,
4/90 = 4 × 32/90 × 32 = 128/2880 - Likewise, for the 2nd fraction, since 64 × 45 = 2880,
63/64 = 63 × 45/64 × 45 = 2835/2880 - Subtract the two like fractions:
128/2880 - 2835/2880 = 128 - 2835/2880 = -2707/2880
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