How do you solve the system of equations #x+ 2y = - 4# and #2y - x = - 8#?
2 Answers
Jun 21, 2017
Explanation:
Here we have a system of two linear equations.
[A] + [B]
Replacing for
Check result in [B]
Results are correct.
Jun 21, 2017
Explanation:
We can use the elimination method to isolate a variable. In this case, we'll start off with isolating
Add the two equations together.
You can now solve this new equation for
Plug the value for
Your solution is