Subtract 20/15 from 7/63
1st number: 7/63, 2nd number: 1 5/15
7/63 - 20/15 is -11/9.
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,
7/63 = 7 × 5/63 × 5 = 35/315 - Likewise, for the 2nd fraction, since 15 × 21 = 315,
20/15 = 20 × 21/15 × 21 = 420/315 - Subtract the two like fractions:
35/315 - 420/315 = 35 - 420/315 = -385/315 - After reducing the fraction, the answer is -11/9
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