Subtract 9/7 from 42/12
1st number: 3 6/12, 2nd number: 1 2/7
42/12 - 9/7 is 31/14.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 12 and 7 is 84
Next, find the equivalent fraction of both fractional numbers with denominator 84 - For the 1st fraction, since 12 × 7 = 84,
42/12 = 42 × 7/12 × 7 = 294/84 - Likewise, for the 2nd fraction, since 7 × 12 = 84,
9/7 = 9 × 12/7 × 12 = 108/84 - Subtract the two like fractions:
294/84 - 108/84 = 294 - 108/84 = 186/84 - After reducing the fraction, the answer is 31/14
- In mixed form: 23/14
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