Subtract 20/63 from 90/42
1st number: 2 6/42, 2nd number: 20/63
90/42 - 20/63 is 115/63.
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,
90/42 = 90 × 3/42 × 3 = 270/126 - Likewise, for the 2nd fraction, since 63 × 2 = 126,
20/63 = 20 × 2/63 × 2 = 40/126 - Subtract the two like fractions:
270/126 - 40/126 = 270 - 40/126 = 230/126 - After reducing the fraction, the answer is 115/63
- In mixed form: 152/63
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