Add 40/18 and 12/8
1st number: 2 4/18, 2nd number: 1 4/8
40/18 + 12/8 is 67/18.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 18 and 8 is 72
Next, find the equivalent fraction of both fractional numbers with denominator 72 - For the 1st fraction, since 18 × 4 = 72,
40/18 = 40 × 4/18 × 4 = 160/72 - Likewise, for the 2nd fraction, since 8 × 9 = 72,
12/8 = 12 × 9/8 × 9 = 108/72 - Add the two like fractions:
160/72 + 108/72 = 160 + 108/72 = 268/72 - 268/72 simplified gives 67/18
- So, 40/18 + 12/8 = 67/18
In mixed form: 313/18
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 80/18+12/8 40/18+24/8 40/36+12/8 40/18+12/16 40/18+36/8 40/54+12/8 40/18+12/24 40/18+60/8 40/90+12/8 40/18+12/40 40/18+84/8 40/18+12/56