Subtract 7/84 from 63/18, Solve 3 9/18

Subtract 7/84 from 63/18

1^st number: 3 9/18, 2^nd number: 7/84

63/18 - 7/84 is 41/12.

Find the least common denominator or LCM of the two denominators:
LCM of 18 and 84 is 252

Next, find the equivalent fraction of both fractional numbers with denominator 252
For the 1st fraction, since 18 × 14 = 252,
63/18 = 63 × 14/18 × 14 = 882/252
Likewise, for the 2nd fraction, since 84 × 3 = 252,
7/84 = 7 × 3/84 × 3 = 21/252
Subtract the two like fractions:
882/252 - 21/252 = 882 - 21/252 = 861/252
After reducing the fraction, the answer is 41/12
In mixed form: 35/12

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