Subtract 20/15 from 15/63
1st number: 15/63, 2nd number: 1 5/15
15/63 - 20/15 is -23/21.
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,
15/63 = 15 × 5/63 × 5 = 75/315 - Likewise, for the 2nd fraction, since 15 × 21 = 315,
20/15 = 20 × 21/15 × 21 = 420/315 - Subtract the two like fractions:
75/315 - 420/315 = 75 - 420/315 = -345/315 - After reducing the fraction, the answer is -23/21
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