algebra 2

[summer yew]

Please help me I beg

[thin hound]

9. okey, we need a same bottom
   (4x/y) × 7x/1 und (4x × 7x / y) × 1/7x = 28x^2 /7xy
   Then
   x+y+28x^2 /7xy

[summer yew]

Thanks so much

[thin hound]

10. we have the same bottom
    And then...
    6x+24 /x+4 => 6(x+4) /x+4 =>
    6

Und elf
11). 15 /x-2 + 3 /x-8

15(x+8) + 3(x-2) /(x-2) × (x+8)

Hm

15x+120+3x-6 / x^2 + 8x - 2x - 16