Subtract 40/45 from 45/63
45/63 - 40/45 is -11/63.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 63 and 45 is 315
Next, find the equivalent fraction of both fractional numbers with denominator 315 - For the 1st fraction, since 63 × 5 = 315,
45/63 = 45 × 5/63 × 5 = 225/315 - Likewise, for the 2nd fraction, since 45 × 7 = 315,
40/45 = 40 × 7/45 × 7 = 280/315 - Subtract the two like fractions:
225/315 - 280/315 = 225 - 280/315 = -55/315 - After reducing the fraction, the answer is -11/63
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