Add 40/15 and 15/90
1st number: 2 10/15, 2nd number: 15/90
40/15 + 15/90 is 17/6.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 15 and 90 is 90
Next, find the equivalent fraction of both fractional numbers with denominator 90 - For the 1st fraction, since 15 × 6 = 90,
40/15 = 40 × 6/15 × 6 = 240/90 - Likewise, for the 2nd fraction, since 90 × 1 = 90,
15/90 = 15 × 1/90 × 1 = 15/90 - Add the two like fractions:
240/90 + 15/90 = 240 + 15/90 = 255/90 - 255/90 simplified gives 17/6
- So, 40/15 + 15/90 = 17/6
In mixed form: 25/6
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 80/15+15/90 40/15+30/90 40/30+15/90 40/15+45/90 40/45+15/90 40/15+75/90 40/75+15/90