Subtract 4/80 from 7/5, Solve 1 2/5

Subtract 4/80 from 7/5

1^st number: 1 2/5, 2^nd number: 4/80

7/5 - 4/80 is 27/20.

Find the least common denominator or LCM of the two denominators:
LCM of 5 and 80 is 80

Next, find the equivalent fraction of both fractional numbers with denominator 80
For the 1st fraction, since 5 × 16 = 80,
7/5 = 7 × 16/5 × 16 = 112/80
Likewise, for the 2nd fraction, since 80 × 1 = 80,
4/80 = 4 × 1/80 × 1 = 4/80
Subtract the two like fractions:
112/80 - 4/80 = 112 - 4/80 = 108/80
After reducing the fraction, the answer is 27/20
In mixed form: 17/20

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