Subtract 20/28 from 10/90
10/90 - 20/28 is -38/63.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 90 and 28 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 28 × 45 = 1260,
20/28 = 20 × 45/28 × 45 = 900/1260 - Subtract the two like fractions:
140/1260 - 900/1260 = 140 - 900/1260 = -760/1260 - After reducing the fraction, the answer is -38/63
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