Subtract 8/63 from 20/12, Solve 1 8/12

Subtract 8/63 from 20/12

1^st number: 1 8/12, 2^nd number: 8/63

20/12 - 8/63 is 97/63.

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,
20/12 = 20 × 21/12 × 21 = 420/252
Likewise, for the 2nd fraction, since 63 × 4 = 252,
8/63 = 8 × 4/63 × 4 = 32/252
Subtract the two like fractions:
420/252 - 32/252 = 420 - 32/252 = 388/252
After reducing the fraction, the answer is 97/63
In mixed form: 134/63

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