Add 40/12 and 9/18
1st number: 3 4/12, 2nd number: 9/18
40/12 + 9/18 is 23/6.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 12 and 18 is 36
Next, find the equivalent fraction of both fractional numbers with denominator 36 - For the 1st fraction, since 12 × 3 = 36,
40/12 = 40 × 3/12 × 3 = 120/36 - Likewise, for the 2nd fraction, since 18 × 2 = 36,
9/18 = 9 × 2/18 × 2 = 18/36 - Add the two like fractions:
120/36 + 18/36 = 120 + 18/36 = 138/36 - 138/36 simplified gives 23/6
- So, 40/12 + 9/18 = 23/6
In mixed form: 35/6
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 80/12+9/18 40/24+9/18 40/12+9/36 40/12+27/18 40/36+9/18 40/12+9/54 40/12+45/18 40/60+9/18 40/12+9/90 40/12+63/18 40/84+9/18