Subtract 15/84 from 10/90
10/90 - 15/84 is -17/252.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 90 and 84 is 1260
Next, find the equivalent fraction of both fractional numbers with denominator 1260 - For the 1st fraction, since 90 × 14 = 1260,
10/90 = 10 × 14/90 × 14 = 140/1260 - Likewise, for the 2nd fraction, since 84 × 15 = 1260,
15/84 = 15 × 15/84 × 15 = 225/1260 - Subtract the two like fractions:
140/1260 - 225/1260 = 140 - 225/1260 = -85/1260 - After reducing the fraction, the answer is -17/252
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