Subtract 75/63 from 3/36, Solve 3/36

Subtract 75/63 from 3/36

1^st number: 3/36, 2^nd number: 1 12/63

3/36 - 75/63 is -31/28.

Find the least common denominator or LCM of the two denominators:
LCM of 36 and 63 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 63 × 4 = 252,
75/63 = 75 × 4/63 × 4 = 300/252
Subtract the two like fractions:
21/252 - 300/252 = 21 - 300/252 = -279/252
After reducing the fraction, the answer is -31/28

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