Subtract 27/28 from 63/18, Solve 3 9/18

Subtract 27/28 from 63/18

1^st number: 3 9/18, 2^nd number: 27/28

63/18 - 27/28 is 71/28.

Find the least common denominator or LCM of the two denominators:
LCM of 18 and 28 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 28 × 9 = 252,
27/28 = 27 × 9/28 × 9 = 243/252
Subtract the two like fractions:
882/252 - 243/252 = 882 - 243/252 = 639/252
After reducing the fraction, the answer is 71/28
In mixed form: 215/28

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