Subtract 21/63 from 12/4, Solve 3 0/4

Subtract 21/63 from 12/4

1^st number: 3 0/4, 2^nd number: 21/63

12/4 - 21/63 is 8/3.

Find the least common denominator or LCM of the two denominators:
LCM of 4 and 63 is 252

Next, find the equivalent fraction of both fractional numbers with denominator 252
For the 1st fraction, since 4 × 63 = 252,
12/4 = 12 × 63/4 × 63 = 756/252
Likewise, for the 2nd fraction, since 63 × 4 = 252,
21/63 = 21 × 4/63 × 4 = 84/252
Subtract the two like fractions:
756/252 - 84/252 = 756 - 84/252 = 672/252
After reducing the fraction, the answer is 8/3
In mixed form: 22/3

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