Subtract 20/63 from 18/60
18/60 - 20/63 is -11/630.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 60 and 63 is 1260
Next, find the equivalent fraction of both fractional numbers with denominator 1260 - For the 1st fraction, since 60 × 21 = 1260,
18/60 = 18 × 21/60 × 21 = 378/1260 - Likewise, for the 2nd fraction, since 63 × 20 = 1260,
20/63 = 20 × 20/63 × 20 = 400/1260 - Subtract the two like fractions:
378/1260 - 400/1260 = 378 - 400/1260 = -22/1260 - After reducing the fraction, the answer is -11/630
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