Add 90/6 and 20/54, Solve 15 0/6 + 20/54 as a fraction

Add 90/6 and 20/54

1^st number: 15 0/6, 2^nd number: 20/54

90/6 + 20/54 is 415/27.

Find the least common denominator or LCM of the two denominators:
LCM of 6 and 54 is 54

Next, find the equivalent fraction of both fractional numbers with denominator 54
For the 1st fraction, since 6 × 9 = 54,
90/6 = 90 × 9/6 × 9 = 810/54
Likewise, for the 2nd fraction, since 54 × 1 = 54,
20/54 = 20 × 1/54 × 1 = 20/54
Add the two like fractions:
810/54 + 20/54 = 810 + 20/54 = 830/54
830/54 simplified gives 415/27
So, 90/6 + 20/54 = 415/27
In mixed form: 1510/27

MathStep (Works offline)

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