Subtract 8/7 from 3/36, Solve 3/36

Subtract 8/7 from 3/36

1^st number: 3/36, 2^nd number: 1 1/7

3/36 - 8/7 is -89/84.

Find the least common denominator or LCM of the two denominators:
LCM of 36 and 7 is 252

Next, find the equivalent fraction of both fractional numbers with denominator 252
For the 1st fraction, since 36 × 7 = 252,
3/36 = 3 × 7/36 × 7 = 21/252
Likewise, for the 2nd fraction, since 7 × 36 = 252,
8/7 = 8 × 36/7 × 36 = 288/252
Subtract the two like fractions:
21/252 - 288/252 = 21 - 288/252 = -267/252
After reducing the fraction, the answer is -89/84

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