Subtract 54/14 from 40/63, Solve 40/63

Subtract 54/14 from 40/63

1^st number: 40/63, 2^nd number: 3 12/14

40/63 - 54/14 is -29/9.

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,
40/63 = 40 × 2/63 × 2 = 80/126
Likewise, for the 2nd fraction, since 14 × 9 = 126,
54/14 = 54 × 9/14 × 9 = 486/126
Subtract the two like fractions:
80/126 - 486/126 = 80 - 486/126 = -406/126
After reducing the fraction, the answer is -29/9

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