Subtract 10/36 from 12/84, Solve 12/84

Subtract 10/36 from 12/84

12/84 - 10/36 is -17/126.

Find the least common denominator or LCM of the two denominators:
LCM of 84 and 36 is 252

Next, find the equivalent fraction of both fractional numbers with denominator 252
For the 1st fraction, since 84 × 3 = 252,
12/84 = 12 × 3/84 × 3 = 36/252
Likewise, for the 2nd fraction, since 36 × 7 = 252,
10/36 = 10 × 7/36 × 7 = 70/252
Subtract the two like fractions:
36/252 - 70/252 = 36 - 70/252 = -34/252
After reducing the fraction, the answer is -17/126

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