Question

For the following system, if you isolated x in the second equation to use the Substitution Method, what expression would you substitute into the first equation?
Equation:
2x + y = 8
-x - 3y = -12
Answer choices:
3y + 12

-3y + 12

3y - 12

-3y - 12
Thanks!

Answer 1

-3y + 12

Answer 2

-3y + 12

Answer 3

Thanks! :)

Answer 4

Can you explain?

Answer 5

\[-x-3y=-12 \]Move -12 to the LHS and -x to the RHS.\[12-3y=x \]

Answer 6

Thank you !

Answer 7

Thank you for the medal.

Answer 8

Your welcome.