Subtract 21/9 from 40/63
1st number: 40/63, 2nd number: 2 3/9
40/63 - 21/9 is -107/63.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 63 and 9 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 9 × 7 = 63,
21/9 = 21 × 7/9 × 7 = 147/63 - Subtract the two like fractions:
40/63 - 147/63 = 40 - 147/63 = -107/63
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