Add 40/90 and 64/9
1st number: 40/90, 2nd number: 7 1/9
40/90 + 64/9 is 68/9.
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,
64/9 = 64 × 10/9 × 10 = 640/90 - Add the two like fractions:
40/90 + 640/90 = 40 + 640/90 = 680/90 - 680/90 simplified gives 68/9
- So, 40/90 + 64/9 = 68/9
In mixed form: 75/9
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 80/90+64/9 40/90+64/18 40/90+64/27 40/90+64/45 40/90+64/63