Subtract 80/63 from 4/12, Solve 4/12

Subtract 80/63 from 4/12

1^st number: 4/12, 2^nd number: 1 17/63

4/12 - 80/63 is -59/63.

Find the least common denominator or LCM of the two denominators:
LCM of 12 and 63 is 252

Next, find the equivalent fraction of both fractional numbers with denominator 252
For the 1st fraction, since 12 × 21 = 252,
4/12 = 4 × 21/12 × 21 = 84/252
Likewise, for the 2nd fraction, since 63 × 4 = 252,
80/63 = 80 × 4/63 × 4 = 320/252
Subtract the two like fractions:
84/252 - 320/252 = 84 - 320/252 = -236/252
After reducing the fraction, the answer is -59/63

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