Subtract 4/10 from 80/15, Solve 5 5/15

Subtract 4/10 from 80/15

1^st number: 5 5/15, 2^nd number: 4/10

80/15 - 4/10 is 74/15.

Find the least common denominator or LCM of the two denominators:
LCM of 15 and 10 is 30

Next, find the equivalent fraction of both fractional numbers with denominator 30
For the 1st fraction, since 15 × 2 = 30,
80/15 = 80 × 2/15 × 2 = 160/30
Likewise, for the 2nd fraction, since 10 × 3 = 30,
4/10 = 4 × 3/10 × 3 = 12/30
Subtract the two like fractions:
160/30 - 12/30 = 160 - 12/30 = 148/30
After reducing the fraction, the answer is 74/15
In mixed form: 414/15

MathStep (Works offline)

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