Subtract 8/20 from 7/63
7/63 - 8/20 is -13/45.
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,
7/63 = 7 × 20/63 × 20 = 140/1260 - Likewise, for the 2nd fraction, since 20 × 63 = 1260,
8/20 = 8 × 63/20 × 63 = 504/1260 - Subtract the two like fractions:
140/1260 - 504/1260 = 140 - 504/1260 = -364/1260 - After reducing the fraction, the answer is -13/45
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