Subtract 20/12 from 90/60
1st number: 1 30/60, 2nd number: 1 8/12
90/60 - 20/12 is -1/6.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 60 and 12 is 60
Next, find the equivalent fraction of both fractional numbers with denominator 60 - For the 1st fraction, since 60 × 1 = 60,
90/60 = 90 × 1/60 × 1 = 90/60 - Likewise, for the 2nd fraction, since 12 × 5 = 60,
20/12 = 20 × 5/12 × 5 = 100/60 - Subtract the two like fractions:
90/60 - 100/60 = 90 - 100/60 = -10/60 - After reducing the fraction, the answer is -1/6
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