Subtract 70/42 from 4/36, Solve 4/36

Subtract 70/42 from 4/36

1^st number: 4/36, 2^nd number: 1 28/42

4/36 - 70/42 is -14/9.

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

Next, find the equivalent fraction of both fractional numbers with denominator 252
For the 1st fraction, since 36 × 7 = 252,
4/36 = 4 × 7/36 × 7 = 28/252
Likewise, for the 2nd fraction, since 42 × 6 = 252,
70/42 = 70 × 6/42 × 6 = 420/252
Subtract the two like fractions:
28/252 - 420/252 = 28 - 420/252 = -392/252
After reducing the fraction, the answer is -14/9

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