Subtract 20/12 from 75/42
1st number: 1 33/42, 2nd number: 1 8/12
75/42 - 20/12 is 5/42.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 42 and 12 is 84
Next, find the equivalent fraction of both fractional numbers with denominator 84 - For the 1st fraction, since 42 × 2 = 84,
75/42 = 75 × 2/42 × 2 = 150/84 - Likewise, for the 2nd fraction, since 12 × 7 = 84,
20/12 = 20 × 7/12 × 7 = 140/84 - Subtract the two like fractions:
150/84 - 140/84 = 150 - 140/84 = 10/84 - After reducing the fraction, the answer is 5/42
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