Add 5/12 and 80/60, Solve 5/12 + 1 20/60 as a fraction

Add 5/12 and 80/60

1^st number: 5/12, 2^nd number: 1 20/60

5/12 + 80/60 is 7/4.

Find the least common denominator or LCM of the two denominators:
LCM of 12 and 60 is 60

Next, find the equivalent fraction of both fractional numbers with denominator 60
For the 1st fraction, since 12 × 5 = 60,
5/12 = 5 × 5/12 × 5 = 25/60
Likewise, for the 2nd fraction, since 60 × 1 = 60,
80/60 = 80 × 1/60 × 1 = 80/60
Add the two like fractions:
25/60 + 80/60 = 25 + 80/60 = 105/60
105/60 simplified gives 7/4
So, 5/12 + 80/60 = 7/4
In mixed form: 13/4

MathStep (Works offline)

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