I could give you the answers but the way to do it is by finding a common denominator between the two and then multiplying the numerator by that much
Take 9 for example
[tex] \frac{2}{3} +\frac{3}{4}[/tex]
The common denominator between these two is 12 because 3*4 = 12 and 4*3 = 12
Now multiply the denominators by that amount to get
[tex]\frac{8}{12} + \frac{9}{12} [/tex]
Then add and simplify
Btw if you need help with stuff just google symbolab and all the steps will be there
