Add 72/28 and 28/9
1st number: 2 16/28, 2nd number: 3 1/9
72/28 + 28/9 is 358/63.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 28 and 9 is 252
Next, find the equivalent fraction of both fractional numbers with denominator 252 - For the 1st fraction, since 28 × 9 = 252,
72/28 = 72 × 9/28 × 9 = 648/252 - Likewise, for the 2nd fraction, since 9 × 28 = 252,
28/9 = 28 × 28/9 × 28 = 784/252 - Add the two like fractions:
648/252 + 784/252 = 648 + 784/252 = 1432/252 - 1432/252 simplified gives 358/63
- So, 72/28 + 28/9 = 358/63
In mixed form: 543/63
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 72/28+56/9 72/56+28/9 72/28+28/18 72/28+84/9 72/84+28/9 72/28+28/27 72/28+28/45 72/28+28/63