Subtract 63/90 from 15/28
15/28 - 63/90 is -23/140.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 28 and 90 is 1260
Next, find the equivalent fraction of both fractional numbers with denominator 1260 - For the 1st fraction, since 28 × 45 = 1260,
15/28 = 15 × 45/28 × 45 = 675/1260 - Likewise, for the 2nd fraction, since 90 × 14 = 1260,
63/90 = 63 × 14/90 × 14 = 882/1260 - Subtract the two like fractions:
675/1260 - 882/1260 = 675 - 882/1260 = -207/1260 - After reducing the fraction, the answer is -23/140
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