Add 72/75 and 18/30
72/75 + 18/30 is 39/25.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 75 and 30 is 150
Next, find the equivalent fraction of both fractional numbers with denominator 150 - For the 1st fraction, since 75 × 2 = 150,
72/75 = 72 × 2/75 × 2 = 144/150 - Likewise, for the 2nd fraction, since 30 × 5 = 150,
18/30 = 18 × 5/30 × 5 = 90/150 - Add the two like fractions:
144/150 + 90/150 = 144 + 90/150 = 234/150 - 234/150 simplified gives 39/25
- So, 72/75 + 18/30 = 39/25
In mixed form: 114/25
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 72/75+36/30 72/75+18/60 72/75+54/30 72/75+18/90 72/75+90/30