Question

-6x - 29 = 5x - 7 (This is Finding the Common Denominator)

Answer 1

if you add 6x to 5x you get 11x and then if you add 7 to -29 you get -22... so your equation will look like this-
-22=11x
which both can be divided by 11 which makes the common denominator 11. and if you wanted to solve it the answer would be- x=-2

Answer 2

    -6*x-29-(5*x-7)=0

   -11x - 22  =   -11 • (x + 2)

Solve :    -11   =  0

 Solve  :    x+2 = 0

   x = -2