Subtract 35/63 from 20/42
20/42 - 35/63 is -5/63.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 42 and 63 is 126
Next, find the equivalent fraction of both fractional numbers with denominator 126 - For the 1st fraction, since 42 × 3 = 126,
20/42 = 20 × 3/42 × 3 = 60/126 - Likewise, for the 2nd fraction, since 63 × 2 = 126,
35/63 = 35 × 2/63 × 2 = 70/126 - Subtract the two like fractions:
60/126 - 70/126 = 60 - 70/126 = -10/126 - After reducing the fraction, the answer is -5/63
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