Add 60/21 and 63/54, Solve 2 18/21 + 1 9/54 as a fraction

Add 60/21 and 63/54

1^st number: 2 18/21, 2^nd number: 1 9/54

60/21 + 63/54 is 169/42.

Find the least common denominator or LCM of the two denominators:
LCM of 21 and 54 is 378

Next, find the equivalent fraction of both fractional numbers with denominator 378
For the 1st fraction, since 21 × 18 = 378,
60/21 = 60 × 18/21 × 18 = 1080/378
Likewise, for the 2nd fraction, since 54 × 7 = 378,
63/54 = 63 × 7/54 × 7 = 441/378
Add the two like fractions:
1080/378 + 441/378 = 1080 + 441/378 = 1521/378
1521/378 simplified gives 169/42
So, 60/21 + 63/54 = 169/42
In mixed form: 41/42

MathStep (Works offline)

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