Add 30/20 and 5/12, Solve 1 10/20 + 5/12 as a fraction

Add 30/20 and 5/12

1^st number: 1 10/20, 2^nd number: 5/12

30/20 + 5/12 is 23/12.

Find the least common denominator or LCM of the two denominators:
LCM of 20 and 12 is 60

Next, find the equivalent fraction of both fractional numbers with denominator 60
For the 1st fraction, since 20 × 3 = 60,
30/20 = 30 × 3/20 × 3 = 90/60
Likewise, for the 2nd fraction, since 12 × 5 = 60,
5/12 = 5 × 5/12 × 5 = 25/60
Add the two like fractions:
90/60 + 25/60 = 90 + 25/60 = 115/60
115/60 simplified gives 23/12
So, 30/20 + 5/12 = 23/12
In mixed form: 111/12

MathStep (Works offline)

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