Subtract 28/90 from 10/84
10/84 - 28/90 is -121/630.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 84 and 90 is 1260
Next, find the equivalent fraction of both fractional numbers with denominator 1260 - For the 1st fraction, since 84 × 15 = 1260,
10/84 = 10 × 15/84 × 15 = 150/1260 - Likewise, for the 2nd fraction, since 90 × 14 = 1260,
28/90 = 28 × 14/90 × 14 = 392/1260 - Subtract the two like fractions:
150/1260 - 392/1260 = 150 - 392/1260 = -242/1260 - After reducing the fraction, the answer is -121/630
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