4(-2z-9)=2(-4z-3)

Solution for 4(-2z-9)=2(-4z-3) equation:

4(-2z-9)=2(-4z-3)

We simplify the equation to the form, which is simple to understand 
4(-2z-9)=2(-4z-3)

Reorder the terms in parentheses
+(-8z-36)=2*(-4z-3)

Remove unnecessary parentheses
-8z-36=+2+*(-4z-3+)

Reorder the terms in parentheses
-8z-36=+(-8z-6)

Remove unnecessary parentheses
-8z-36=-8z-6

We move all terms containing z to the left and all other terms to the right. 
-8z+8z=-6+36

We simplify left and right side of the equation. 
z=+30

0=30

The left and right sides are not equal, therefore there is no solution. This equation is invalid.