Add 40/15 and 84/45
1st number: 2 10/15, 2nd number: 1 39/45
40/15 + 84/45 is 68/15.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 15 and 45 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 45 × 1 = 45,
84/45 = 84 × 1/45 × 1 = 84/45 - Add the two like fractions:
120/45 + 84/45 = 120 + 84/45 = 204/45 - 204/45 simplified gives 68/15
- So, 40/15 + 84/45 = 68/15
In mixed form: 48/15
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 80/15+84/45 40/30+84/45 40/15+84/90 40/45+84/45 40/75+84/45