Subtract 8/80 from 15/8, Solve 1 7/8

Subtract 8/80 from 15/8

1^st number: 1 7/8, 2^nd number: 8/80

15/8 - 8/80 is 71/40.

Find the least common denominator or LCM of the two denominators:
LCM of 8 and 80 is 80

Next, find the equivalent fraction of both fractional numbers with denominator 80
For the 1st fraction, since 8 × 10 = 80,
15/8 = 15 × 10/8 × 10 = 150/80
Likewise, for the 2nd fraction, since 80 × 1 = 80,
8/80 = 8 × 1/80 × 1 = 8/80
Subtract the two like fractions:
150/80 - 8/80 = 150 - 8/80 = 142/80
After reducing the fraction, the answer is 71/40
In mixed form: 131/40

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