Add 56/5 and 72/12, Solve 11 1/5 + 6 0/12 as a fraction

Add 56/5 and 72/12

1^st number: 11 1/5, 2^nd number: 6 0/12

56/5 + 72/12 is 86/5.

Find the least common denominator or LCM of the two denominators:
LCM of 5 and 12 is 60

Next, find the equivalent fraction of both fractional numbers with denominator 60
For the 1st fraction, since 5 × 12 = 60,
56/5 = 56 × 12/5 × 12 = 672/60
Likewise, for the 2nd fraction, since 12 × 5 = 60,
72/12 = 72 × 5/12 × 5 = 360/60
Add the two like fractions:
672/60 + 360/60 = 672 + 360/60 = 1032/60
1032/60 simplified gives 86/5
So, 56/5 + 72/12 = 86/5
In mixed form: 171/5

MathStep (Works offline)

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