Subtract 6/80 from 7/2, Solve 3 1/2

Subtract 6/80 from 7/2

1^st number: 3 1/2, 2^nd number: 6/80

7/2 - 6/80 is 137/40.

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,
7/2 = 7 × 40/2 × 40 = 280/80
Likewise, for the 2nd fraction, since 80 × 1 = 80,
6/80 = 6 × 1/80 × 1 = 6/80
Subtract the two like fractions:
280/80 - 6/80 = 280 - 6/80 = 274/80
After reducing the fraction, the answer is 137/40
In mixed form: 317/40

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