Subtract 42/36 from 20/30
1st number: 20/30, 2nd number: 1 6/36
20/30 - 42/36 is -1/2.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 30 and 36 is 180
Next, find the equivalent fraction of both fractional numbers with denominator 180 - For the 1st fraction, since 30 × 6 = 180,
20/30 = 20 × 6/30 × 6 = 120/180 - Likewise, for the 2nd fraction, since 36 × 5 = 180,
42/36 = 42 × 5/36 × 5 = 210/180 - Subtract the two like fractions:
120/180 - 210/180 = 120 - 210/180 = -90/180 - After reducing the fraction, the answer is -1/2
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