What is the value of the x variable in the solution to the following system of equations?

4x + 2y = 12

x - y = 3

zero
−3
3
2

Question

What is the value of the x variable in the solution to the following system of equations?

4x + 2y = 12

x - y = 3
 	
	zero
	−3
	3
	2

anonymous · Answer

First multiply second equation by 2. Add the first equation and the new equation formed to get x..

anonymous · Answer

Got it... ? o.O

anonymous · Answer

2x-2y=6?

anonymous · Answer

Yeah..Now add the equations...

anonymous · Answer

8x + 4y = 18?

anonymous · Answer

Like this..$$4x+2y+(2x-2y)=12+6$$

anonymous · Answer

anonymous · Answer

Hadn't seen that before. Thanks :) You can eliminate y by multiplying the second equation by -2 and then subtracting Eqn 2 from Eqn 1

anonymous · Answer

@Jessica_Moore Try again....
Never mind.. ;) @Varuns

anonymous · Answer

I got it now, thanks!!