Question

Solve the linear system:
x+2y=2
x-2y=6

Answer 1

x+2y = 2 ---- call this equation (1)
x-2y = 6 ----call this equation (2)
use (1) + (2) you get 2x = 8 so x = 8/4 = ?
after you get the value of x, substitute x into either one of the two equations, you will have the value of y

Answer 2

2x=8 so x = 8/2 = ?
is what @linkinage meant

Answer 3

4?

Answer 4

I guess the 8/2 = ?part is the "guiding the user to the answer" :P lol

Answer 5

You have to solve for each unknown by eliminating them one at a time.
Add equation A and B

A) x+2y=2
B) x-2y=6

2x = 8
so x =4
Try solving for y.

Answer 6

do we subtract now to solve for y?

Answer 7

there are several ways to do this. by subtracting two equations you can get the value of y as well. XD

Answer 8

Now that x has been eliminated, solving for y is easier.
Substitute 'x' into either equation A or B will easily solve for 'y'
So let's pick equation A and substitute the 'x' with 4
x+2y=2
4 + 2y = 2
Now can you solve for 'y'?

Answer 9

6y=2
y=3?

Answer 10

No
4 + 2y = 2
Subtract 4 from both sides

Answer 11

y=-2?

Answer 12

I'm guessing you did this
4 -4 + 2y = 2 -4
2y = -2
divide both sides by 2

Answer 13

y=-1

Answer 14

You've got it !!

Answer 15

thank you!!

Answer 16

u r welcome :-)