Subtract 20/14 from 63/18, Solve 3 9/18

Subtract 20/14 from 63/18

1^st number: 3 9/18, 2^nd number: 1 6/14

63/18 - 20/14 is 29/14.

Find the least common denominator or LCM of the two denominators:
LCM of 18 and 14 is 126

Next, find the equivalent fraction of both fractional numbers with denominator 126
For the 1st fraction, since 18 × 7 = 126,
63/18 = 63 × 7/18 × 7 = 441/126
Likewise, for the 2nd fraction, since 14 × 9 = 126,
20/14 = 20 × 9/14 × 9 = 180/126
Subtract the two like fractions:
441/126 - 180/126 = 441 - 180/126 = 261/126
After reducing the fraction, the answer is 29/14
In mixed form: 21/14

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