Question

-5*(0,8z-1?2)=-z+7,2

Answer 1

-5*(0,8z-1,2)=-z+7,2
-4z+6=-z+7,2
-4z+z=7,2-6
-3z=1,2
z=-0,4
Ответ: -0,4.

Answer 2

Let's solve the equation step by step:

-5 * (0.8z - 1/2) = -z + 7.2

First, distribute the -5 to the terms inside the parentheses:

-4z + 2.5 = -z + 7.2

Next, let's isolate the variable terms on one side and the constant terms on the other side:

-4z + z = 7.2 - 2.5

Simplifying both sides:

-3z = 4.7

Now, divide both sides by -3 to solve for z:

z = 4.7 / -3

Dividing 4.7 by -3:

z ≈ -1.5667

So, the solution to the equation is z ≈ -1.5667.