Add 18/8 and 12/18
1st number: 2 2/8, 2nd number: 12/18
18/8 + 12/18 is 35/12.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 8 and 18 is 72
Next, find the equivalent fraction of both fractional numbers with denominator 72 - For the 1st fraction, since 8 × 9 = 72,
18/8 = 18 × 9/8 × 9 = 162/72 - Likewise, for the 2nd fraction, since 18 × 4 = 72,
12/18 = 12 × 4/18 × 4 = 48/72 - Add the two like fractions:
162/72 + 48/72 = 162 + 48/72 = 210/72 - 210/72 simplified gives 35/12
- So, 18/8 + 12/18 = 35/12
In mixed form: 211/12
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 36/8+12/18 18/8+24/18 18/16+12/18 18/8+12/36 54/8+12/18 18/8+36/18 18/24+12/18 18/8+12/54 90/8+12/18 18/8+60/18 18/40+12/18 18/8+12/90 18/8+84/18 18/56+12/18