Subtract 18/40 from 63/4, Solve 15 3/4

Subtract 18/40 from 63/4

1^st number: 15 3/4, 2^nd number: 18/40

63/4 - 18/40 is 153/10.

Find the least common denominator or LCM of the two denominators:
LCM of 4 and 40 is 40

Next, find the equivalent fraction of both fractional numbers with denominator 40
For the 1st fraction, since 4 × 10 = 40,
63/4 = 63 × 10/4 × 10 = 630/40
Likewise, for the 2nd fraction, since 40 × 1 = 40,
18/40 = 18 × 1/40 × 1 = 18/40
Subtract the two like fractions:
630/40 - 18/40 = 630 - 18/40 = 612/40
After reducing the fraction, the answer is 153/10
In mixed form: 153/10

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