Subtract 56/18 from 90/42
1st number: 2 6/42, 2nd number: 3 2/18
90/42 - 56/18 is -61/63.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 42 and 18 is 126
Next, find the equivalent fraction of both fractional numbers with denominator 126 - For the 1st fraction, since 42 × 3 = 126,
90/42 = 90 × 3/42 × 3 = 270/126 - Likewise, for the 2nd fraction, since 18 × 7 = 126,
56/18 = 56 × 7/18 × 7 = 392/126 - Subtract the two like fractions:
270/126 - 392/126 = 270 - 392/126 = -122/126 - After reducing the fraction, the answer is -61/63
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