Subtract 45/42 from 63/12, Solve 5 3/12

Subtract 45/42 from 63/12

1^st number: 5 3/12, 2^nd number: 1 3/42

63/12 - 45/42 is 117/28.

Find the least common denominator or LCM of the two denominators:
LCM of 12 and 42 is 84

Next, find the equivalent fraction of both fractional numbers with denominator 84
For the 1st fraction, since 12 × 7 = 84,
63/12 = 63 × 7/12 × 7 = 441/84
Likewise, for the 2nd fraction, since 42 × 2 = 84,
45/42 = 45 × 2/42 × 2 = 90/84
Subtract the two like fractions:
441/84 - 90/84 = 441 - 90/84 = 351/84
After reducing the fraction, the answer is 117/28
In mixed form: 45/28

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