Add 18/8 and 40/18
1st number: 2 2/8, 2nd number: 2 4/18
18/8 + 40/18 is 161/36.
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,
40/18 = 40 × 4/18 × 4 = 160/72 - Add the two like fractions:
162/72 + 160/72 = 162 + 160/72 = 322/72 - 322/72 simplified gives 161/36
- So, 18/8 + 40/18 = 161/36
In mixed form: 417/36
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 36/8+40/18 18/8+80/18 18/16+40/18 18/8+40/36 54/8+40/18 18/24+40/18 18/8+40/54 90/8+40/18 18/40+40/18 18/8+40/90 18/56+40/18