Subtract 25/80 from 75/5, Solve 15 0/5

Subtract 25/80 from 75/5

1^st number: 15 0/5, 2^nd number: 25/80

75/5 - 25/80 is 235/16.

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,
75/5 = 75 × 16/5 × 16 = 1200/80
Likewise, for the 2nd fraction, since 80 × 1 = 80,
25/80 = 25 × 1/80 × 1 = 25/80
Subtract the two like fractions:
1200/80 - 25/80 = 1200 - 25/80 = 1175/80
After reducing the fraction, the answer is 235/16
In mixed form: 1411/16

MathStep (Works offline)

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