Add 64/28 and 28/72, Solve 2 8/28 + 28/72 as a fraction

Add 64/28 and 28/72

1^st number: 2 8/28, 2^nd number: 28/72

64/28 + 28/72 is 337/126.

Find the least common denominator or LCM of the two denominators:
LCM of 28 and 72 is 504

Next, find the equivalent fraction of both fractional numbers with denominator 504
For the 1st fraction, since 28 × 18 = 504,
64/28 = 64 × 18/28 × 18 = 1152/504
Likewise, for the 2nd fraction, since 72 × 7 = 504,
28/72 = 28 × 7/72 × 7 = 196/504
Add the two like fractions:
1152/504 + 196/504 = 1152 + 196/504 = 1348/504
1348/504 simplified gives 337/126
So, 64/28 + 28/72 = 337/126
In mixed form: 285/126

MathStep (Works offline)

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