Subtract 21/96 from 10/90
10/90 - 21/96 is -31/288.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 90 and 96 is 1440
Next, find the equivalent fraction of both fractional numbers with denominator 1440 - For the 1st fraction, since 90 × 16 = 1440,
10/90 = 10 × 16/90 × 16 = 160/1440 - Likewise, for the 2nd fraction, since 96 × 15 = 1440,
21/96 = 21 × 15/96 × 15 = 315/1440 - Subtract the two like fractions:
160/1440 - 315/1440 = 160 - 315/1440 = -155/1440 - After reducing the fraction, the answer is -31/288
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