Subtract 90/64 from 15/30
1st number: 15/30, 2nd number: 1 26/64
15/30 - 90/64 is -29/32.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 30 and 64 is 960
Next, find the equivalent fraction of both fractional numbers with denominator 960 - For the 1st fraction, since 30 × 32 = 960,
15/30 = 15 × 32/30 × 32 = 480/960 - Likewise, for the 2nd fraction, since 64 × 15 = 960,
90/64 = 90 × 15/64 × 15 = 1350/960 - Subtract the two like fractions:
480/960 - 1350/960 = 480 - 1350/960 = -870/960 - After reducing the fraction, the answer is -29/32
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