Subtract 18/8 from 63/18, Solve 3 9/18

Subtract 18/8 from 63/18

1^st number: 3 9/18, 2^nd number: 2 2/8

63/18 - 18/8 is 5/4.

Find the least common denominator or LCM of the two denominators:
LCM of 18 and 8 is 72

Next, find the equivalent fraction of both fractional numbers with denominator 72
For the 1st fraction, since 18 × 4 = 72,
63/18 = 63 × 4/18 × 4 = 252/72
Likewise, for the 2nd fraction, since 8 × 9 = 72,
18/8 = 18 × 9/8 × 9 = 162/72
Subtract the two like fractions:
252/72 - 162/72 = 252 - 162/72 = 90/72
After reducing the fraction, the answer is 5/4
In mixed form: 11/4

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