Subtract 10/15 from 40/63
40/63 - 10/15 is -2/63.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 63 and 15 is 315
Next, find the equivalent fraction of both fractional numbers with denominator 315 - For the 1st fraction, since 63 × 5 = 315,
40/63 = 40 × 5/63 × 5 = 200/315 - Likewise, for the 2nd fraction, since 15 × 21 = 315,
10/15 = 10 × 21/15 × 21 = 210/315 - Subtract the two like fractions:
200/315 - 210/315 = 200 - 210/315 = -10/315 - After reducing the fraction, the answer is -2/63
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