Subtract 45/80 from 7/4, Solve 1 3/4

Subtract 45/80 from 7/4

1^st number: 1 3/4, 2^nd number: 45/80

7/4 - 45/80 is 19/16.

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,
7/4 = 7 × 20/4 × 20 = 140/80
Likewise, for the 2nd fraction, since 80 × 1 = 80,
45/80 = 45 × 1/80 × 1 = 45/80
Subtract the two like fractions:
140/80 - 45/80 = 140 - 45/80 = 95/80
After reducing the fraction, the answer is 19/16
In mixed form: 13/16

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