Add 27/72 and 63/4, Solve 27/72 + 15 3/4 as a fraction

Add 27/72 and 63/4

1^st number: 27/72, 2^nd number: 15 3/4

27/72 + 63/4 is 129/8.

Find the least common denominator or LCM of the two denominators:
LCM of 72 and 4 is 72

Next, find the equivalent fraction of both fractional numbers with denominator 72
For the 1st fraction, since 72 × 1 = 72,
27/72 = 27 × 1/72 × 1 = 27/72
Likewise, for the 2nd fraction, since 4 × 18 = 72,
63/4 = 63 × 18/4 × 18 = 1134/72
Add the two like fractions:
27/72 + 1134/72 = 27 + 1134/72 = 1161/72
1161/72 simplified gives 129/8
So, 27/72 + 63/4 = 129/8
In mixed form: 161/8

MathStep (Works offline)

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