Add 12/3 and 15/40
1st number: 4 0/3, 2nd number: 15/40
12/3 + 15/40 is 35/8.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 3 and 40 is 120
Next, find the equivalent fraction of both fractional numbers with denominator 120 - For the 1st fraction, since 3 × 40 = 120,
12/3 = 12 × 40/3 × 40 = 480/120 - Likewise, for the 2nd fraction, since 40 × 3 = 120,
15/40 = 15 × 3/40 × 3 = 45/120 - Add the two like fractions:
480/120 + 45/120 = 480 + 45/120 = 525/120 - 525/120 simplified gives 35/8
- So, 12/3 + 15/40 = 35/8
In mixed form: 43/8
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 24/3+15/40 12/3+30/40 12/6+15/40 12/3+15/80 36/3+15/40 12/3+45/40 12/9+15/40 60/3+15/40 12/3+75/40 12/15+15/40 84/3+15/40 12/21+15/40