Subtract 6/80 from 15/5, Solve 3 0/5

Subtract 6/80 from 15/5

1^st number: 3 0/5, 2^nd number: 6/80

15/5 - 6/80 is 117/40.

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,
15/5 = 15 × 16/5 × 16 = 240/80
Likewise, for the 2nd fraction, since 80 × 1 = 80,
6/80 = 6 × 1/80 × 1 = 6/80
Subtract the two like fractions:
240/80 - 6/80 = 240 - 6/80 = 234/80
After reducing the fraction, the answer is 117/40
In mixed form: 237/40

MathStep (Works offline)

Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad