Subtract 12/15 from 42/20
1st number: 2 2/20, 2nd number: 12/15
42/20 - 12/15 is 13/10.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 20 and 15 is 60
Next, find the equivalent fraction of both fractional numbers with denominator 60 - For the 1st fraction, since 20 × 3 = 60,
42/20 = 42 × 3/20 × 3 = 126/60 - Likewise, for the 2nd fraction, since 15 × 4 = 60,
12/15 = 12 × 4/15 × 4 = 48/60 - Subtract the two like fractions:
126/60 - 48/60 = 126 - 48/60 = 78/60 - After reducing the fraction, the answer is 13/10
- In mixed form: 13/10
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