Subtract 18/60 from 9/90
9/90 - 18/60 is -1/5.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 90 and 60 is 180
Next, find the equivalent fraction of both fractional numbers with denominator 180 - For the 1st fraction, since 90 × 2 = 180,
9/90 = 9 × 2/90 × 2 = 18/180 - Likewise, for the 2nd fraction, since 60 × 3 = 180,
18/60 = 18 × 3/60 × 3 = 54/180 - Subtract the two like fractions:
18/180 - 54/180 = 18 - 54/180 = -36/180 - After reducing the fraction, the answer is -1/5
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