Add 28/18 and 10/80
1st number: 1 10/18, 2nd number: 10/80
28/18 + 10/80 is 121/72.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 18 and 80 is 720
Next, find the equivalent fraction of both fractional numbers with denominator 720 - For the 1st fraction, since 18 × 40 = 720,
28/18 = 28 × 40/18 × 40 = 1120/720 - Likewise, for the 2nd fraction, since 80 × 9 = 720,
10/80 = 10 × 9/80 × 9 = 90/720 - Add the two like fractions:
1120/720 + 90/720 = 1120 + 90/720 = 1210/720 - 1210/720 simplified gives 121/72
- So, 28/18 + 10/80 = 121/72
In mixed form: 149/72
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 56/18+10/80 28/18+20/80 28/36+10/80 84/18+10/80 28/18+30/80 28/54+10/80 28/18+50/80 28/90+10/80 28/18+70/80