Subtract 9/28 from 80/5, Solve 16 0/5

Subtract 9/28 from 80/5

1^st number: 16 0/5, 2^nd number: 9/28

80/5 - 9/28 is 439/28.

Find the least common denominator or LCM of the two denominators:
LCM of 5 and 28 is 140

Next, find the equivalent fraction of both fractional numbers with denominator 140
For the 1st fraction, since 5 × 28 = 140,
80/5 = 80 × 28/5 × 28 = 2240/140
Likewise, for the 2nd fraction, since 28 × 5 = 140,
9/28 = 9 × 5/28 × 5 = 45/140
Subtract the two like fractions:
2240/140 - 45/140 = 2240 - 45/140 = 2195/140
After reducing the fraction, the answer is 439/28
In mixed form: 1519/28

MathStep (Works offline)

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