3z + 2z = 56

To solve the equation 3z + 2z = 56, we can combine the like terms on the left side of the equation:

3z + 2z = 5z

So the equation becomes 5z = 56.

To isolate z, we divide both sides of the equation by 5:

(5z)/5 = 56/5

z = 11.2

Therefore, the solution to the equation is z = 11.2.