Subtract 63/12 from 54/40, Solve 1 14/40

Subtract 63/12 from 54/40

1^st number: 1 14/40, 2^nd number: 5 3/12

54/40 - 63/12 is -39/10.

Find the least common denominator or LCM of the two denominators:
LCM of 40 and 12 is 120

Next, find the equivalent fraction of both fractional numbers with denominator 120
For the 1st fraction, since 40 × 3 = 120,
54/40 = 54 × 3/40 × 3 = 162/120
Likewise, for the 2nd fraction, since 12 × 10 = 120,
63/12 = 63 × 10/12 × 10 = 630/120
Subtract the two like fractions:
162/120 - 630/120 = 162 - 630/120 = -468/120
After reducing the fraction, the answer is -39/10

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