Add 35/12 and 81/80
1st number: 2 11/12, 2nd number: 1 1/80
35/12 + 81/80 is 943/240.
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,
35/12 = 35 × 20/12 × 20 = 700/240 - Likewise, for the 2nd fraction, since 80 × 3 = 240,
81/80 = 81 × 3/80 × 3 = 243/240 - Add the two like fractions:
700/240 + 243/240 = 700 + 243/240 = 943/240 - So, 35/12 + 81/80 = 943/240
In mixed form: 3223/240
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 70/12+81/80 35/24+81/80 35/36+81/80 35/60+81/80 35/84+81/80