Add 60/21 and 6/18, Solve 2 18/21 + 6/18 as a fraction

Add 60/21 and 6/18

1^st number: 2 18/21, 2^nd number: 6/18

60/21 + 6/18 is 67/21.

Find the least common denominator or LCM of the two denominators:
LCM of 21 and 18 is 126

Next, find the equivalent fraction of both fractional numbers with denominator 126
For the 1st fraction, since 21 × 6 = 126,
60/21 = 60 × 6/21 × 6 = 360/126
Likewise, for the 2nd fraction, since 18 × 7 = 126,
6/18 = 6 × 7/18 × 7 = 42/126
Add the two like fractions:
360/126 + 42/126 = 360 + 42/126 = 402/126
402/126 simplified gives 67/21
So, 60/21 + 6/18 = 67/21
In mixed form: 34/21

MathStep (Works offline)

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