Add 90/6 and 20/30, Solve 15 0/6 + 20/30 as a fraction

Add 90/6 and 20/30

1^st number: 15 0/6, 2^nd number: 20/30

90/6 + 20/30 is 47/3.

Find the least common denominator or LCM of the two denominators:
LCM of 6 and 30 is 30

Next, find the equivalent fraction of both fractional numbers with denominator 30
For the 1st fraction, since 6 × 5 = 30,
90/6 = 90 × 5/6 × 5 = 450/30
Likewise, for the 2nd fraction, since 30 × 1 = 30,
20/30 = 20 × 1/30 × 1 = 20/30
Add the two like fractions:
450/30 + 20/30 = 450 + 20/30 = 470/30
470/30 simplified gives 47/3
So, 90/6 + 20/30 = 47/3
In mixed form: 152/3

MathStep (Works offline)

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