Add 28/12 and 30/80
1st number: 2 4/12, 2nd number: 30/80
28/12 + 30/80 is 65/24.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 12 and 80 is 240
Next, find the equivalent fraction of both fractional numbers with denominator 240 - For the 1st fraction, since 12 × 20 = 240,
28/12 = 28 × 20/12 × 20 = 560/240 - Likewise, for the 2nd fraction, since 80 × 3 = 240,
30/80 = 30 × 3/80 × 3 = 90/240 - Add the two like fractions:
560/240 + 90/240 = 560 + 90/240 = 650/240 - 650/240 simplified gives 65/24
- So, 28/12 + 30/80 = 65/24
In mixed form: 217/24
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 56/12+30/80 28/12+60/80 28/24+30/80 84/12+30/80 28/12+90/80 28/36+30/80 28/60+30/80 28/84+30/80