Subtract 15/20 from 8/63
8/63 - 15/20 is -157/252.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 63 and 20 is 1260
Next, find the equivalent fraction of both fractional numbers with denominator 1260 - For the 1st fraction, since 63 × 20 = 1260,
8/63 = 8 × 20/63 × 20 = 160/1260 - Likewise, for the 2nd fraction, since 20 × 63 = 1260,
15/20 = 15 × 63/20 × 63 = 945/1260 - Subtract the two like fractions:
160/1260 - 945/1260 = 160 - 945/1260 = -785/1260 - After reducing the fraction, the answer is -157/252
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