Add 20/63 and 63/54, Solve 20/63 + 1 9/54 as a fraction

Add 20/63 and 63/54

1^st number: 20/63, 2^nd number: 1 9/54

20/63 + 63/54 is 187/126.

Find the least common denominator or LCM of the two denominators:
LCM of 63 and 54 is 378

Next, find the equivalent fraction of both fractional numbers with denominator 378
For the 1st fraction, since 63 × 6 = 378,
20/63 = 20 × 6/63 × 6 = 120/378
Likewise, for the 2nd fraction, since 54 × 7 = 378,
63/54 = 63 × 7/54 × 7 = 441/378
Add the two like fractions:
120/378 + 441/378 = 120 + 441/378 = 561/378
561/378 simplified gives 187/126
So, 20/63 + 63/54 = 187/126
In mixed form: 161/126

MathStep (Works offline)

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