Add 28/90 and 70/10
1st number: 28/90, 2nd number: 7 0/10
28/90 + 70/10 is 329/45.
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,
70/10 = 70 × 9/10 × 9 = 630/90 - Add the two like fractions:
28/90 + 630/90 = 28 + 630/90 = 658/90 - 658/90 simplified gives 329/45
- So, 28/90 + 70/10 = 329/45
In mixed form: 714/45
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 56/90+70/10 28/90+70/20 84/90+70/10 28/90+70/30 28/90+70/50