Add 28/25 and 5/72, Solve 1 3/25 + 5/72 as a fraction

Add 28/25 and 5/72

1^st number: 1 3/25, 2^nd number: 5/72

28/25 + 5/72 is 2141/1800.

Find the least common denominator or LCM of the two denominators:
LCM of 25 and 72 is 1800

Next, find the equivalent fraction of both fractional numbers with denominator 1800
For the 1st fraction, since 25 × 72 = 1800,
28/25 = 28 × 72/25 × 72 = 2016/1800
Likewise, for the 2nd fraction, since 72 × 25 = 1800,
5/72 = 5 × 25/72 × 25 = 125/1800
Add the two like fractions:
2016/1800 + 125/1800 = 2016 + 125/1800 = 2141/1800
So, 28/25 + 5/72 = 2141/1800
In mixed form: 1341/1800

MathStep (Works offline)

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