Subtract 45/63 from 56/12, Solve 4 8/12

Subtract 45/63 from 56/12

1^st number: 4 8/12, 2^nd number: 45/63

56/12 - 45/63 is 83/21.

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,
56/12 = 56 × 21/12 × 21 = 1176/252
Likewise, for the 2nd fraction, since 63 × 4 = 252,
45/63 = 45 × 4/63 × 4 = 180/252
Subtract the two like fractions:
1176/252 - 180/252 = 1176 - 180/252 = 996/252
After reducing the fraction, the answer is 83/21
In mixed form: 320/21

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