Subtract 40/12 from 30/20
1st number: 1 10/20, 2nd number: 3 4/12
30/20 - 40/12 is -11/6.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 20 and 12 is 60
Next, find the equivalent fraction of both fractional numbers with denominator 60 - For the 1st fraction, since 20 × 3 = 60,
30/20 = 30 × 3/20 × 3 = 90/60 - Likewise, for the 2nd fraction, since 12 × 5 = 60,
40/12 = 40 × 5/12 × 5 = 200/60 - Subtract the two like fractions:
90/60 - 200/60 = 90 - 200/60 = -110/60 - After reducing the fraction, the answer is -11/6
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