Subtract 42/25 from 12/20
1st number: 12/20, 2nd number: 1 17/25
12/20 - 42/25 is -27/25.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 20 and 25 is 100
Next, find the equivalent fraction of both fractional numbers with denominator 100 - For the 1st fraction, since 20 × 5 = 100,
12/20 = 12 × 5/20 × 5 = 60/100 - Likewise, for the 2nd fraction, since 25 × 4 = 100,
42/25 = 42 × 4/25 × 4 = 168/100 - Subtract the two like fractions:
60/100 - 168/100 = 60 - 168/100 = -108/100 - After reducing the fraction, the answer is -27/25
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