Subtract 21/15 from 49/63
1st number: 49/63, 2nd number: 1 6/15
49/63 - 21/15 is -28/45.
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,
49/63 = 49 × 5/63 × 5 = 245/315 - Likewise, for the 2nd fraction, since 15 × 21 = 315,
21/15 = 21 × 21/15 × 21 = 441/315 - Subtract the two like fractions:
245/315 - 441/315 = 245 - 441/315 = -196/315 - After reducing the fraction, the answer is -28/45
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