Subtract 80/24 from 1/5, Solve 1/5 - 3 8/24 as a fraction

Subtract 80/24 from 1/5

1^st number: 1/5, 2^nd number: 3 8/24

1/5 - 80/24 is -47/15.

Find the least common denominator or LCM of the two denominators:
LCM of 5 and 24 is 120

Next, find the equivalent fraction of both fractional numbers with denominator 120
For the 1st fraction, since 5 × 24 = 120,
1/5 = 1 × 24/5 × 24 = 24/120
Likewise, for the 2nd fraction, since 24 × 5 = 120,
80/24 = 80 × 5/24 × 5 = 400/120
Subtract the two like fractions:
24/120 - 400/120 = 24 - 400/120 = -376/120
After reducing the fraction, the answer is -47/15

MathStep (Works offline)

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