Subtract 15/36 from 42/14, Solve 3 0/14

Subtract 15/36 from 42/14

1^st number: 3 0/14, 2^nd number: 15/36

42/14 - 15/36 is 31/12.

Find the least common denominator or LCM of the two denominators:
LCM of 14 and 36 is 252

Next, find the equivalent fraction of both fractional numbers with denominator 252
For the 1st fraction, since 14 × 18 = 252,
42/14 = 42 × 18/14 × 18 = 756/252
Likewise, for the 2nd fraction, since 36 × 7 = 252,
15/36 = 15 × 7/36 × 7 = 105/252
Subtract the two like fractions:
756/252 - 105/252 = 756 - 105/252 = 651/252
After reducing the fraction, the answer is 31/12
In mixed form: 27/12

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