Add 45/30 and 20/9
1st number: 1 15/30, 2nd number: 2 2/9
45/30 + 20/9 is 67/18.
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,
45/30 = 45 × 3/30 × 3 = 135/90 - Likewise, for the 2nd fraction, since 9 × 10 = 90,
20/9 = 20 × 10/9 × 10 = 200/90 - Add the two like fractions:
135/90 + 200/90 = 135 + 200/90 = 335/90 - 335/90 simplified gives 67/18
- So, 45/30 + 20/9 = 67/18
In mixed form: 313/18
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 90/30+20/9 45/30+40/9 45/60+20/9 45/30+20/18 45/30+60/9 45/90+20/9 45/30+20/27 45/30+20/45 45/30+20/63