Add 28/72 and 75/56, Solve 28/72 + 1 19/56 as a fraction

Add 28/72 and 75/56

1^st number: 28/72, 2^nd number: 1 19/56

28/72 + 75/56 is 871/504.

Find the least common denominator or LCM of the two denominators:
LCM of 72 and 56 is 504

Next, find the equivalent fraction of both fractional numbers with denominator 504
For the 1st fraction, since 72 × 7 = 504,
28/72 = 28 × 7/72 × 7 = 196/504
Likewise, for the 2nd fraction, since 56 × 9 = 504,
75/56 = 75 × 9/56 × 9 = 675/504
Add the two like fractions:
196/504 + 675/504 = 196 + 675/504 = 871/504
So, 28/72 + 75/56 = 871/504
In mixed form: 1367/504

MathStep (Works offline)

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