Subtract 20/60 from 15/18
15/18 - 20/60 is 1/2.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 18 and 60 is 180
Next, find the equivalent fraction of both fractional numbers with denominator 180 - For the 1st fraction, since 18 × 10 = 180,
15/18 = 15 × 10/18 × 10 = 150/180 - Likewise, for the 2nd fraction, since 60 × 3 = 180,
20/60 = 20 × 3/60 × 3 = 60/180 - Subtract the two like fractions:
150/180 - 60/180 = 150 - 60/180 = 90/180 - After reducing the fraction, the answer is 1/2
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