Subtract 20/7 from 40/63
1st number: 40/63, 2nd number: 2 6/7
40/63 - 20/7 is -20/9.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 63 and 7 is 63
Next, find the equivalent fraction of both fractional numbers with denominator 63 - For the 1st fraction, since 63 × 1 = 63,
40/63 = 40 × 1/63 × 1 = 40/63 - Likewise, for the 2nd fraction, since 7 × 9 = 63,
20/7 = 20 × 9/7 × 9 = 180/63 - Subtract the two like fractions:
40/63 - 180/63 = 40 - 180/63 = -140/63 - After reducing the fraction, the answer is -20/9
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