Subtract 63/36 from 7/42, Solve 7/42

Subtract 63/36 from 7/42

1^st number: 7/42, 2^nd number: 1 27/36

7/42 - 63/36 is -19/12.

Find the least common denominator or LCM of the two denominators:
LCM of 42 and 36 is 252

Next, find the equivalent fraction of both fractional numbers with denominator 252
For the 1st fraction, since 42 × 6 = 252,
7/42 = 7 × 6/42 × 6 = 42/252
Likewise, for the 2nd fraction, since 36 × 7 = 252,
63/36 = 63 × 7/36 × 7 = 441/252
Subtract the two like fractions:
42/252 - 441/252 = 42 - 441/252 = -399/252
After reducing the fraction, the answer is -19/12

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