Subtract 1/63 from 21/18
1st number: 1 3/18, 2nd number: 1/63
21/18 - 1/63 is 145/126.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 18 and 63 is 126
Next, find the equivalent fraction of both fractional numbers with denominator 126 - For the 1st fraction, since 18 × 7 = 126,
21/18 = 21 × 7/18 × 7 = 147/126 - Likewise, for the 2nd fraction, since 63 × 2 = 126,
1/63 = 1 × 2/63 × 2 = 2/126 - Subtract the two like fractions:
147/126 - 2/126 = 147 - 2/126 = 145/126 - In mixed form: 119/126
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