Subtract 15/63 from 72/84
72/84 - 15/63 is 13/21.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 84 and 63 is 252
Next, find the equivalent fraction of both fractional numbers with denominator 252 - For the 1st fraction, since 84 × 3 = 252,
72/84 = 72 × 3/84 × 3 = 216/252 - Likewise, for the 2nd fraction, since 63 × 4 = 252,
15/63 = 15 × 4/63 × 4 = 60/252 - Subtract the two like fractions:
216/252 - 60/252 = 216 - 60/252 = 156/252 - After reducing the fraction, the answer is 13/21
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