Question

score: 2/5 penalty: 1 off
question
solve.
2(5z + 9) = -12
answer attempt 1 out of 2
z =
submit answer

Explanation:

Step1: Divide both sides by 2

$\frac{2(5z + 9)}{2} = \frac{-12}{2}$
$5z + 9 = -6$

Step2: Subtract 9 from both sides

$5z + 9 - 9 = -6 - 9$
$5z = -15$

Step3: Divide both sides by 5

$\frac{5z}{5} = \frac{-15}{5}$
$z = -3$

Answer:

$z = -3$