The expression of x in the equation is x = (-25 + b)/0.9
How to determine the expression for x in the equation
From the question, we have the following parameters that can be used in our computation:
25 = -0.9x + b
Isolate the x term
So, we have
25 - b = -0.9x
Divide both sides by -0.9
(25 - b)/(-0.9) = x
This gives
x = (-25 + b)/0.9
Hence, the expression of x is x = (-25 + b)/0.9