Add 40/15 and 18/8
1st number: 2 10/15, 2nd number: 2 2/8
40/15 + 18/8 is 59/12.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 15 and 8 is 120
Next, find the equivalent fraction of both fractional numbers with denominator 120 - For the 1st fraction, since 15 × 8 = 120,
40/15 = 40 × 8/15 × 8 = 320/120 - Likewise, for the 2nd fraction, since 8 × 15 = 120,
18/8 = 18 × 15/8 × 15 = 270/120 - Add the two like fractions:
320/120 + 270/120 = 320 + 270/120 = 590/120 - 590/120 simplified gives 59/12
- So, 40/15 + 18/8 = 59/12
In mixed form: 411/12
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 80/15+18/8 40/15+36/8 40/30+18/8 40/15+18/16 40/15+54/8 40/45+18/8 40/15+18/24 40/15+90/8 40/75+18/8 40/15+18/40 40/15+18/56