Subtract 3/42 from 20/18
1st number: 1 2/18, 2nd number: 3/42
20/18 - 3/42 is 131/126.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 18 and 42 is 126
Next, find the equivalent fraction of both fractional numbers with denominator 126 - For the 1st fraction, since 18 × 7 = 126,
20/18 = 20 × 7/18 × 7 = 140/126 - Likewise, for the 2nd fraction, since 42 × 3 = 126,
3/42 = 3 × 3/42 × 3 = 9/126 - Subtract the two like fractions:
140/126 - 9/126 = 140 - 9/126 = 131/126 - In mixed form: 15/126
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