Subtract 9/42 from 81/63
1st number: 1 18/63, 2nd number: 9/42
81/63 - 9/42 is 15/14.
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,
81/63 = 81 × 2/63 × 2 = 162/126 - Likewise, for the 2nd fraction, since 42 × 3 = 126,
9/42 = 9 × 3/42 × 3 = 27/126 - Subtract the two like fractions:
162/126 - 27/126 = 162 - 27/126 = 135/126 - After reducing the fraction, the answer is 15/14
- In mixed form: 11/14
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