Add 18/90 and 28/60
18/90 + 28/60 is 2/3.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 90 and 60 is 180
Next, find the equivalent fraction of both fractional numbers with denominator 180 - For the 1st fraction, since 90 × 2 = 180,
18/90 = 18 × 2/90 × 2 = 36/180 - Likewise, for the 2nd fraction, since 60 × 3 = 180,
28/60 = 28 × 3/60 × 3 = 84/180 - Add the two like fractions:
36/180 + 84/180 = 36 + 84/180 = 120/180 - 120/180 simplified gives 2/3
- So, 18/90 + 28/60 = 2/3
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 36/90+28/60 18/90+56/60 54/90+28/60 18/90+84/60