Question

Whats the question to this

Answer 1

z = - 7.5

Explanation:

given the equation

3.5z - 2.7z = - 6 ( subtract like terms on left side )

0.8z = - 6 ( divide both sides by 0.8 )

`(0.8)/(0.8)` z =
`(-6)/(0.8)` , that is

z = - 7.5