Add 20/30 and 45/9
1st number: 20/30, 2nd number: 5 0/9
20/30 + 45/9 is 17/3.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 30 and 9 is 90
Next, find the equivalent fraction of both fractional numbers with denominator 90 - For the 1st fraction, since 30 × 3 = 90,
20/30 = 20 × 3/30 × 3 = 60/90 - Likewise, for the 2nd fraction, since 9 × 10 = 90,
45/9 = 45 × 10/9 × 10 = 450/90 - Add the two like fractions:
60/90 + 450/90 = 60 + 450/90 = 510/90 - 510/90 simplified gives 17/3
- So, 20/30 + 45/9 = 17/3
In mixed form: 52/3
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 40/30+45/9 20/30+90/9 20/60+45/9 20/30+45/18 60/30+45/9 20/90+45/9 20/30+45/27 20/30+45/63