Question

Solve for the variables.
y = - 3 – z - 2
- 2 + y = - 3 + z
Question 2 options:

a) y = -2; z = -3

b) y = -3; z = 2

c) y = -3; z = -2

d) None of these

Answer 1

I tried substitution, but I did not get any of these. Please help.

Answer 2

Lets try it again

y = - 3 – z - 2
- 2 + y = - 3 + z

replace 'y' with the first equation

-2 -3 - z - 2 = -3 + z

-5 - z - 2 = -3 + z

-7 - z = -3 + z

-4 - z = z

-4 = 2z

z = -2

Now use z to solve for 'y'

y = - 3 – (-2) - 2

y = -3 + 2 - 2

y = -3

so I get

z = -2 y = -3

Answer 3

Thank you!!

Answer 4

No problem! :)