Add 72/28 and 30/36
1st number: 2 16/28, 2nd number: 30/36
72/28 + 30/36 is 143/42.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 28 and 36 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 36 × 7 = 252,
30/36 = 30 × 7/36 × 7 = 210/252 - Add the two like fractions:
648/252 + 210/252 = 648 + 210/252 = 858/252 - 858/252 simplified gives 143/42
- So, 72/28 + 30/36 = 143/42
In mixed form: 317/42
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 72/28+60/36 72/56+30/36 72/28+30/72 72/28+90/36 72/84+30/36