Add 40/15 and 84/9
1st number: 2 10/15, 2nd number: 9 3/9
40/15 + 84/9 is 12/1.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 15 and 9 is 45
Next, find the equivalent fraction of both fractional numbers with denominator 45 - For the 1st fraction, since 15 × 3 = 45,
40/15 = 40 × 3/15 × 3 = 120/45 - Likewise, for the 2nd fraction, since 9 × 5 = 45,
84/9 = 84 × 5/9 × 5 = 420/45 - Add the two like fractions:
120/45 + 420/45 = 120 + 420/45 = 540/45 - 540/45 simplified gives 12/1
- So, 40/15 + 84/9 = 12/1
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 80/15+84/9 40/30+84/9 40/15+84/18 40/45+84/9 40/15+84/27 40/75+84/9 40/15+84/45 40/15+84/63