Add 28/90 and 18/10
1st number: 28/90, 2nd number: 1 8/10
28/90 + 18/10 is 19/9.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 90 and 10 is 90
Next, find the equivalent fraction of both fractional numbers with denominator 90 - For the 1st fraction, since 90 × 1 = 90,
28/90 = 28 × 1/90 × 1 = 28/90 - Likewise, for the 2nd fraction, since 10 × 9 = 90,
18/10 = 18 × 9/10 × 9 = 162/90 - Add the two like fractions:
28/90 + 162/90 = 28 + 162/90 = 190/90 - 190/90 simplified gives 19/9
- So, 28/90 + 18/10 = 19/9
In mixed form: 21/9
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 56/90+18/10 28/90+36/10 28/90+18/20 84/90+18/10 28/90+54/10 28/90+18/30 28/90+90/10 28/90+18/50 28/90+18/70