Subtract 21/42 from 80/63
1st number: 1 17/63, 2nd number: 21/42
80/63 - 21/42 is 97/126.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 63 and 42 is 126
Next, find the equivalent fraction of both fractional numbers with denominator 126 - For the 1st fraction, since 63 × 2 = 126,
80/63 = 80 × 2/63 × 2 = 160/126 - Likewise, for the 2nd fraction, since 42 × 3 = 126,
21/42 = 21 × 3/42 × 3 = 63/126 - Subtract the two like fractions:
160/126 - 63/126 = 160 - 63/126 = 97/126
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