Subtract 42/6 from 12/20
1st number: 12/20, 2nd number: 7 0/6
12/20 - 42/6 is -32/5.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 20 and 6 is 60
Next, find the equivalent fraction of both fractional numbers with denominator 60 - For the 1st fraction, since 20 × 3 = 60,
12/20 = 12 × 3/20 × 3 = 36/60 - Likewise, for the 2nd fraction, since 6 × 10 = 60,
42/6 = 42 × 10/6 × 10 = 420/60 - Subtract the two like fractions:
36/60 - 420/60 = 36 - 420/60 = -384/60 - After reducing the fraction, the answer is -32/5
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