Subtract 20/63 from 90/54
1st number: 1 36/54, 2nd number: 20/63
90/54 - 20/63 is 85/63.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 54 and 63 is 378
Next, find the equivalent fraction of both fractional numbers with denominator 378 - For the 1st fraction, since 54 × 7 = 378,
90/54 = 90 × 7/54 × 7 = 630/378 - Likewise, for the 2nd fraction, since 63 × 6 = 378,
20/63 = 20 × 6/63 × 6 = 120/378 - Subtract the two like fractions:
630/378 - 120/378 = 630 - 120/378 = 510/378 - After reducing the fraction, the answer is 85/63
- In mixed form: 122/63
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