Subtract 7/45 from 8/63
8/63 - 7/45 is -1/35.
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,
8/63 = 8 × 5/63 × 5 = 40/315 - Likewise, for the 2nd fraction, since 45 × 7 = 315,
7/45 = 7 × 7/45 × 7 = 49/315 - Subtract the two like fractions:
40/315 - 49/315 = 40 - 49/315 = -9/315 - After reducing the fraction, the answer is -1/35
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