Add 40/90 and 40/15
1st number: 40/90, 2nd number: 2 10/15
40/90 + 40/15 is 28/9.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 90 and 15 is 90
Next, find the equivalent fraction of both fractional numbers with denominator 90 - For the 1st fraction, since 90 × 1 = 90,
40/90 = 40 × 1/90 × 1 = 40/90 - Likewise, for the 2nd fraction, since 15 × 6 = 90,
40/15 = 40 × 6/15 × 6 = 240/90 - Add the two like fractions:
40/90 + 240/90 = 40 + 240/90 = 280/90 - 280/90 simplified gives 28/9
- So, 40/90 + 40/15 = 28/9
In mixed form: 31/9
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 80/90+40/15 40/90+80/15 40/90+40/30 40/90+40/45 40/90+40/75