Subtract 84/36 from 72/63
1st number: 1 9/63, 2nd number: 2 12/36
72/63 - 84/36 is -25/21.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 63 and 36 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 36 × 7 = 252,
84/36 = 84 × 7/36 × 7 = 588/252 - Subtract the two like fractions:
288/252 - 588/252 = 288 - 588/252 = -300/252 - After reducing the fraction, the answer is -25/21
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Related: 72/63-84/72