Subtract 20/60 from 12/63
12/63 - 20/60 is -1/7.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 63 and 60 is 1260
Next, find the equivalent fraction of both fractional numbers with denominator 1260 - For the 1st fraction, since 63 × 20 = 1260,
12/63 = 12 × 20/63 × 20 = 240/1260 - Likewise, for the 2nd fraction, since 60 × 21 = 1260,
20/60 = 20 × 21/60 × 21 = 420/1260 - Subtract the two like fractions:
240/1260 - 420/1260 = 240 - 420/1260 = -180/1260 - After reducing the fraction, the answer is -1/7
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