(5X - 3) +( 7x - 4 )= 8 - (15 - 11x)

Let's solve the equation step by step:

(5X - 3) + (7x - 4) = 8 - (15 - 11x)

First, let's remove the parentheses:

5X - 3 + 7x - 4 = 8 - 15 + 11x

Simplify the equation:

12x - 7 = -7 + 11x

Now, let's isolate the x term on one side of the equation:

12x - 11x = -7 + 7

x = 0

So, the solution to the equation is x = 0.