Answer: 
Step-by-step explanation:
If you meant to solve for "z", then refer to the attachment below.
Answer:
B. 12
x = 12
Also you can use mathpapa to help you with math.
So -5x=-50
multiply both sides by -1
5x=50
divide by 5
x=10
check
-5 times 10=-50
-50=-50
check
Answer:
be happy
Step-by-step explanation: