Subtract 2/7 from 42/12, Solve 3 6/12

Subtract 2/7 from 42/12

1^st number: 3 6/12, 2^nd number: 2/7

42/12 - 2/7 is 45/14.

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,
2/7 = 2 × 12/7 × 12 = 24/84
Subtract the two like fractions:
294/84 - 24/84 = 294 - 24/84 = 270/84
After reducing the fraction, the answer is 45/14
In mixed form: 33/14

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