If 2az-5z=2 then z=?

Question

directrix · Answer

2az-5z=2

z( 2a - 5) = 2

z = 2/ (2a -5)

anonymous · Answer

can u explain what you did please

directrix · Answer

1. 2az-5z=2   ---> the problem

2. To solve for z, then the z terms have to be collected on one side of the equation.
 They are already collected on one side.

3. Factor out the z term.

z ( 2a - 5) = 2

4. Think of this as a coefficient times a variable.

as in (2a - 5) * z = 2

[Note:  If we had 7Z =  2, the answer would be z = 2/7.]

We will do the same for  (2a - 5) * z = 2.

5. z =  2 /  (2a - 5)

Note that solving for z means there are no z terms in the solution for z.