Subtract 18/64 from 4/90
4/90 - 18/64 is -341/1440.
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,
18/64 = 18 × 45/64 × 45 = 810/2880 - Subtract the two like fractions:
128/2880 - 810/2880 = 128 - 810/2880 = -682/2880 - After reducing the fraction, the answer is -341/1440
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