Add 8/18 and 40/30
1st number: 8/18, 2nd number: 1 10/30
8/18 + 40/30 is 16/9.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 18 and 30 is 90
Next, find the equivalent fraction of both fractional numbers with denominator 90 - For the 1st fraction, since 18 × 5 = 90,
8/18 = 8 × 5/18 × 5 = 40/90 - Likewise, for the 2nd fraction, since 30 × 3 = 90,
40/30 = 40 × 3/30 × 3 = 120/90 - Add the two like fractions:
40/90 + 120/90 = 40 + 120/90 = 160/90 - 160/90 simplified gives 16/9
- So, 8/18 + 40/30 = 16/9
In mixed form: 17/9
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 16/18+40/30 8/18+80/30 8/36+40/30 8/18+40/60 24/18+40/30 8/54+40/30 8/18+40/90 40/18+40/30 8/90+40/30 56/18+40/30