Subtract 15/12 from 72/63
1st number: 1 9/63, 2nd number: 1 3/12
72/63 - 15/12 is -3/28.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 63 and 12 is 252
Next, find the equivalent fraction of both fractional numbers with denominator 252 - For the 1st fraction, since 63 × 4 = 252,
72/63 = 72 × 4/63 × 4 = 288/252 - Likewise, for the 2nd fraction, since 12 × 21 = 252,
15/12 = 15 × 21/12 × 21 = 315/252 - Subtract the two like fractions:
288/252 - 315/252 = 288 - 315/252 = -27/252 - After reducing the fraction, the answer is -3/28
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