Subtract 20/96 from 3/90
3/90 - 20/96 is -7/40.
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,
3/90 = 3 × 16/90 × 16 = 48/1440 - Likewise, for the 2nd fraction, since 96 × 15 = 1440,
20/96 = 20 × 15/96 × 15 = 300/1440 - Subtract the two like fractions:
48/1440 - 300/1440 = 48 - 300/1440 = -252/1440 - After reducing the fraction, the answer is -7/40
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