Subtract 84/54 from 20/63
1st number: 20/63, 2nd number: 1 30/54
20/63 - 84/54 is -26/21.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 63 and 54 is 378
Next, find the equivalent fraction of both fractional numbers with denominator 378 - For the 1st fraction, since 63 × 6 = 378,
20/63 = 20 × 6/63 × 6 = 120/378 - Likewise, for the 2nd fraction, since 54 × 7 = 378,
84/54 = 84 × 7/54 × 7 = 588/378 - Subtract the two like fractions:
120/378 - 588/378 = 120 - 588/378 = -468/378 - After reducing the fraction, the answer is -26/21
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