Subtract 18/80 from 45/4, Solve 11 1/4

Subtract 18/80 from 45/4

1^st number: 11 1/4, 2^nd number: 18/80

45/4 - 18/80 is 441/40.

Find the least common denominator or LCM of the two denominators:
LCM of 4 and 80 is 80

Next, find the equivalent fraction of both fractional numbers with denominator 80
For the 1st fraction, since 4 × 20 = 80,
45/4 = 45 × 20/4 × 20 = 900/80
Likewise, for the 2nd fraction, since 80 × 1 = 80,
18/80 = 18 × 1/80 × 1 = 18/80
Subtract the two like fractions:
900/80 - 18/80 = 900 - 18/80 = 882/80
After reducing the fraction, the answer is 441/40
In mixed form: 111/40

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