Add 40/80 and 10/9
1st number: 40/80, 2nd number: 1 1/9
40/80 + 10/9 is 29/18.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 80 and 9 is 720
Next, find the equivalent fraction of both fractional numbers with denominator 720 - For the 1st fraction, since 80 × 9 = 720,
40/80 = 40 × 9/80 × 9 = 360/720 - Likewise, for the 2nd fraction, since 9 × 80 = 720,
10/9 = 10 × 80/9 × 80 = 800/720 - Add the two like fractions:
360/720 + 800/720 = 360 + 800/720 = 1160/720 - 1160/720 simplified gives 29/18
- So, 40/80 + 10/9 = 29/18
In mixed form: 111/18
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 40/80+20/9 40/80+10/18 40/80+30/9 40/80+10/27 40/80+50/9 40/80+10/45 40/80+70/9 40/80+10/63