Subtract 20/63 from 40/18
1st number: 2 4/18, 2nd number: 20/63
40/18 - 20/63 is 40/21.
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,
40/18 = 40 × 7/18 × 7 = 280/126 - Likewise, for the 2nd fraction, since 63 × 2 = 126,
20/63 = 20 × 2/63 × 2 = 40/126 - Subtract the two like fractions:
280/126 - 40/126 = 280 - 40/126 = 240/126 - After reducing the fraction, the answer is 40/21
- In mixed form: 119/21
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