Question

8. Solve the following equation z- 4 = -8

A. z = -2
B. z = 32
C. z = -4
D. z = -12

9. Solve the following equation -3 = x/5
A. y = 1.4
B. y = 1/2
C. y = 2.8
D. y = 0.6

10. Solve the following equation
A. x = -9/4
B. x = -15
C. x = -3/5
D. x = 15

Answer 1

8. C



9. B



10. idk what the equation is

Answer 2

You are solving for the variable. Note the equal sign. What you do to one side, you do to the other. Do the opposite of PEMDAS:

8) z- 4 = -8

Isolate the z. Add 4 to each side

z - 4 (+4) = -8 (+4)

z = -8 + 4

z = -4

C. z = -4 is your answer

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9) -3 = x/5

Note the equal sign. What you do to one side, you do to the other. Isolate the x. Multiply 5 to both sides

-3(5) = x/5(5)

x = -3(5)

x = - 15

B. x = - 15 is your answer

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hope this helps