Question

Which of these strategies would eliminate a variable in the system of equations?

(2x + 3y = -5
(x – 3y = 10
Choose all answers that apply:
Multiply the top equation by 2. then add the equations.
Subtract the bottom equation from the top equation.
Add the equations.

Answer 1

Answer: 1) Subtract the bottom equation from the top equation. 2) Add the equations.

Explanation:

1) This eliminates the x-variable. 2) This eliminates the y-variable.