Add 15/90 and 40/9
1st number: 15/90, 2nd number: 4 4/9
15/90 + 40/9 is 83/18.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 90 and 9 is 90
Next, find the equivalent fraction of both fractional numbers with denominator 90 - For the 1st fraction, since 90 × 1 = 90,
15/90 = 15 × 1/90 × 1 = 15/90 - Likewise, for the 2nd fraction, since 9 × 10 = 90,
40/9 = 40 × 10/9 × 10 = 400/90 - Add the two like fractions:
15/90 + 400/90 = 15 + 400/90 = 415/90 - 415/90 simplified gives 83/18
- So, 15/90 + 40/9 = 83/18
In mixed form: 411/18
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 30/90+40/9 15/90+80/9 15/90+40/18 45/90+40/9 15/90+40/27 75/90+40/9 15/90+40/45 15/90+40/63