Subtract 20/84 from 15/18
15/18 - 20/84 is 25/42.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 18 and 84 is 252
Next, find the equivalent fraction of both fractional numbers with denominator 252 - For the 1st fraction, since 18 × 14 = 252,
15/18 = 15 × 14/18 × 14 = 210/252 - Likewise, for the 2nd fraction, since 84 × 3 = 252,
20/84 = 20 × 3/84 × 3 = 60/252 - Subtract the two like fractions:
210/252 - 60/252 = 210 - 60/252 = 150/252 - After reducing the fraction, the answer is 25/42
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