Subtract 1/12 from 72/42
1st number: 1 30/42, 2nd number: 1/12
72/42 - 1/12 is 137/84.
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,
72/42 = 72 × 2/42 × 2 = 144/84 - Likewise, for the 2nd fraction, since 12 × 7 = 84,
1/12 = 1 × 7/12 × 7 = 7/84 - Subtract the two like fractions:
144/84 - 7/84 = 144 - 7/84 = 137/84 - In mixed form: 153/84
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