Subtract 25/14 from 18/63, Solve 18/63

Subtract 25/14 from 18/63

1^st number: 18/63, 2^nd number: 1 11/14

18/63 - 25/14 is -3/2.

Find the least common denominator or LCM of the two denominators:
LCM of 63 and 14 is 126

Next, find the equivalent fraction of both fractional numbers with denominator 126
For the 1st fraction, since 63 × 2 = 126,
18/63 = 18 × 2/63 × 2 = 36/126
Likewise, for the 2nd fraction, since 14 × 9 = 126,
25/14 = 25 × 9/14 × 9 = 225/126
Subtract the two like fractions:
36/126 - 225/126 = 36 - 225/126 = -189/126
After reducing the fraction, the answer is -3/2

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