Add 40/90 and 7/9
40/90 + 7/9 is 11/9.
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,
40/90 = 40 × 1/90 × 1 = 40/90 - Likewise, for the 2nd fraction, since 9 × 10 = 90,
7/9 = 7 × 10/9 × 10 = 70/90 - Add the two like fractions:
40/90 + 70/90 = 40 + 70/90 = 110/90 - 110/90 simplified gives 11/9
- So, 40/90 + 7/9 = 11/9
In mixed form: 12/9
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 80/90+7/9 40/90+14/9 40/90+7/18 40/90+21/9 40/90+7/27 40/90+35/9 40/90+7/45 40/90+49/9 40/90+7/63