Question

What is the solution to the equation? 1 minus z/5=9 Answers: A. z = 50   B. z = 44   C. z = –2   D. z = – 40

Answer 1

$1 - \frac{z}{5} = 9$

add $\frac{z}{5}$ to both sides.

$1 = 9 + \frac{z}{5}$

subtract 9 to both sides.

$-8 = \frac{z}{5}$ 

multiply 5 to both sides.

$-40 = z$

Your answer is D) z = -40