Question

MEDAL!

A system of equations is shown below:

x + y = 3
2x - y = 6

The x-coordinate of the solution to this system of equations is _____.

Answer 1

So you're saying that the solution to the system of equations is (9, 6), @15238?

Answer 2

Because 9 + 6 does not equal 3. :/

Answer 3

But 2 * 9 - -6 = 24.

Answer 4

In the second equation in the system of equations, we are subtracting, not adding.

Answer 5

Oh, I made a mistake in my head.

x = 3 and y= 0

Answer 6

2x-6 = 3 - x

3x = 9

x = 3

Answer 7

Yep, that checks out! I can't believe I didn't think of that! I tried like every other possible solution. Lol! Thank you so much, @15238! :)

Answer 8

Yeah np, just isolate y in each equation then set them equal to each other