Add 40/90 and 80/18
1st number: 40/90, 2nd number: 4 8/18
40/90 + 80/18 is 44/9.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 90 and 18 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 18 × 5 = 90,
80/18 = 80 × 5/18 × 5 = 400/90 - Add the two like fractions:
40/90 + 400/90 = 40 + 400/90 = 440/90 - 440/90 simplified gives 44/9
- So, 40/90 + 80/18 = 44/9
In mixed form: 48/9
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 80/90+80/18 40/90+80/36 40/90+80/54 40/90+80/90