Question

When I did it I got z=1.18 but its wrong and now I'm confused. P.s this might take me a while to understand.

Answer 1

the given equation is

8.3z - 4.1z + 4 = 14.5

4.2z + 4 = 14.5

4.2z = 14.5 - 4 = 10.5

4.2z = 10.5

z = 10.5/4.2

z= 2.5

so the answer is z = 2.5

is it given in the question

to inverse this ?

because i can only see the expression

so i solved according that