Add 10/72 and 42/18, Solve 10/72 + 2 6/18 as a fraction

Add 10/72 and 42/18

1^st number: 10/72, 2^nd number: 2 6/18

10/72 + 42/18 is 89/36.

Find the least common denominator or LCM of the two denominators:
LCM of 72 and 18 is 72

Next, find the equivalent fraction of both fractional numbers with denominator 72
For the 1st fraction, since 72 × 1 = 72,
10/72 = 10 × 1/72 × 1 = 10/72
Likewise, for the 2nd fraction, since 18 × 4 = 72,
42/18 = 42 × 4/18 × 4 = 168/72
Add the two like fractions:
10/72 + 168/72 = 10 + 168/72 = 178/72
178/72 simplified gives 89/36
So, 10/72 + 42/18 = 89/36
In mixed form: 217/36

MathStep (Works offline)

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