Subtract 56/63 from 18/20
18/20 - 56/63 is 1/90.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 20 and 63 is 1260
Next, find the equivalent fraction of both fractional numbers with denominator 1260 - For the 1st fraction, since 20 × 63 = 1260,
18/20 = 18 × 63/20 × 63 = 1134/1260 - Likewise, for the 2nd fraction, since 63 × 20 = 1260,
56/63 = 56 × 20/63 × 20 = 1120/1260 - Subtract the two like fractions:
1134/1260 - 1120/1260 = 1134 - 1120/1260 = 14/1260 - After reducing the fraction, the answer is 1/90
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