Add 28/90 and 84/10
1st number: 28/90, 2nd number: 8 4/10
28/90 + 84/10 is 392/45.
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,
84/10 = 84 × 9/10 × 9 = 756/90 - Add the two like fractions:
28/90 + 756/90 = 28 + 756/90 = 784/90 - 784/90 simplified gives 392/45
- So, 28/90 + 84/10 = 392/45
In mixed form: 832/45
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 56/90+84/10 28/90+84/20 84/90+84/10 28/90+84/30 28/90+84/50 28/90+84/70