Add 9/18 and 80/35, Solve 9/18 + 2 10/35 as a fraction

Add 9/18 and 80/35

1^st number: 9/18, 2^nd number: 2 10/35

9/18 + 80/35 is 39/14.

Find the least common denominator or LCM of the two denominators:
LCM of 18 and 35 is 630

Next, find the equivalent fraction of both fractional numbers with denominator 630
For the 1st fraction, since 18 × 35 = 630,
9/18 = 9 × 35/18 × 35 = 315/630
Likewise, for the 2nd fraction, since 35 × 18 = 630,
80/35 = 80 × 18/35 × 18 = 1440/630
Add the two like fractions:
315/630 + 1440/630 = 315 + 1440/630 = 1755/630
1755/630 simplified gives 39/14
So, 9/18 + 80/35 = 39/14
In mixed form: 211/14

MathStep (Works offline)

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