Question

How can I solve this with elimination?
4x=2y-10
x+2y=5

Answer 1

You need to get 4x=2y-10 into standard form first. Standard form is Ax + By = C

To do this, you subtract 2y from both sides.

4x=2y-10

4x-2y = -10

Answer 2

We now have this system

4x-2y=-10
x+2y=5

Adding the equations gives us

4x-2y=-10
x+2y=5
----------
5x+0y = -5

which is really 5x = -5. Solve for x to get x = ????