Subtract 1/60 from 42/90
42/90 - 1/60 is 9/20.
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,
42/90 = 42 × 2/90 × 2 = 84/180 - Likewise, for the 2nd fraction, since 60 × 3 = 180,
1/60 = 1 × 3/60 × 3 = 3/180 - Subtract the two like fractions:
84/180 - 3/180 = 84 - 3/180 = 81/180 - After reducing the fraction, the answer is 9/20
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