Subtract 5/80 from 80/2, Solve 40 0/2

Subtract 5/80 from 80/2

1^st number: 40 0/2, 2^nd number: 5/80

80/2 - 5/80 is 639/16.

Find the least common denominator or LCM of the two denominators:
LCM of 2 and 80 is 80

Next, find the equivalent fraction of both fractional numbers with denominator 80
For the 1st fraction, since 2 × 40 = 80,
80/2 = 80 × 40/2 × 40 = 3200/80
Likewise, for the 2nd fraction, since 80 × 1 = 80,
5/80 = 5 × 1/80 × 1 = 5/80
Subtract the two like fractions:
3200/80 - 5/80 = 3200 - 5/80 = 3195/80
After reducing the fraction, the answer is 639/16
In mixed form: 3915/16

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