Subtract 63/18 from 28/14, Solve 2 0/14

Subtract 63/18 from 28/14

1^st number: 2 0/14, 2^nd number: 3 9/18

28/14 - 63/18 is -3/2.

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

Next, find the equivalent fraction of both fractional numbers with denominator 126
For the 1st fraction, since 14 × 9 = 126,
28/14 = 28 × 9/14 × 9 = 252/126
Likewise, for the 2nd fraction, since 18 × 7 = 126,
63/18 = 63 × 7/18 × 7 = 441/126
Subtract the two like fractions:
252/126 - 441/126 = 252 - 441/126 = -189/126
After reducing the fraction, the answer is -3/2

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