Add 28/10 and 9/90
1st number: 2 8/10, 2nd number: 9/90
28/10 + 9/90 is 29/10.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 10 and 90 is 90
Next, find the equivalent fraction of both fractional numbers with denominator 90 - For the 1st fraction, since 10 × 9 = 90,
28/10 = 28 × 9/10 × 9 = 252/90 - Likewise, for the 2nd fraction, since 90 × 1 = 90,
9/90 = 9 × 1/90 × 1 = 9/90 - Add the two like fractions:
252/90 + 9/90 = 252 + 9/90 = 261/90 - 261/90 simplified gives 29/10
- So, 28/10 + 9/90 = 29/10
In mixed form: 29/10
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 56/10+9/90 28/10+18/90 28/20+9/90 84/10+9/90 28/10+27/90 28/30+9/90 28/10+45/90 28/50+9/90 28/10+63/90 28/70+9/90