Subtract 20/45 from 12/60
12/60 - 20/45 is -11/45.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 60 and 45 is 180
Next, find the equivalent fraction of both fractional numbers with denominator 180 - For the 1st fraction, since 60 × 3 = 180,
12/60 = 12 × 3/60 × 3 = 36/180 - Likewise, for the 2nd fraction, since 45 × 4 = 180,
20/45 = 20 × 4/45 × 4 = 80/180 - Subtract the two like fractions:
36/180 - 80/180 = 36 - 80/180 = -44/180 - After reducing the fraction, the answer is -11/45
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