Subtract 90/36 from 72/63
1st number: 1 9/63, 2nd number: 2 18/36
72/63 - 90/36 is -19/14.
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,
90/36 = 90 × 7/36 × 7 = 630/252 - Subtract the two like fractions:
288/252 - 630/252 = 288 - 630/252 = -342/252 - After reducing the fraction, the answer is -19/14
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Related: 72/63-90/72