Subtract 80/63 from 1/42
1st number: 1/42, 2nd number: 1 17/63
1/42 - 80/63 is -157/126.
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,
1/42 = 1 × 3/42 × 3 = 3/126 - Likewise, for the 2nd fraction, since 63 × 2 = 126,
80/63 = 80 × 2/63 × 2 = 160/126 - Subtract the two like fractions:
3/126 - 160/126 = 3 - 160/126 = -157/126
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