Question

What is the x-coordinate of the solution of the following system of equations?

3x + y = 6
x - y = 6

Answer 1

3x + y = 6 = y =-3x+6
x - y = 6

x-(-3x+6)=6
x+3x-6=6
4x+6=6
-6 -6
4x=0
x=0

Answer 2

I think i'm wrong. Let me recheck. :S

Answer 3

1st one is wrong.

Answer 4

Im going to go on a limb and say that the 0 answer is correct

Answer 5

No it cant be the answers to my course say -3
0
3

Answer 6

3x + y = 6 = y =-3x+6
x - y = 6
x-(-3x+6)=6
x+3x-6=6
4x-6=6
+6 +6
4x=12
x=3

Answer 7

I see where i made the mistake.. In the 1st one that +6 was suppose to be -6

Answer 8

u see?

Answer 9

Ahhh

Answer 10

yea i do

Answer 11

ahah, so 3.. cya

Answer 12

thanks