Question

x - y = 4
x + y = 8

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

My work

x-y=4
- x+y=8
---------
0 - 2y = 4
1. Divide two on both sides
y= -2

x-2=4
Add two to both sides
x=6

Second equation
6+ -2= 8

So my answer is 6 ?

Answer 1

\(\sf 4-8 = -4\)

Answer 2

x−y=4;−x+y=8
Step: Solve x−y=4 for x:
x−y+y=4+y(Add y to both sides)
x=y+4
Step: Substitute (y+4) for x in −x+y=8:
−x+y=8
−(y+4)+y=8
−4=8(Simplify both sides of the equation)
−4+4=8+4(Add 4 to both sides)
?????

Answer 3

2
4
6
12
My answer options

Answer 4

So restart from here

- 2y = -4
y= 2

Answer 5

Look at the steps and solve the last step

Answer 6

You did that error but you came out with the same correct answer... interesting coincidence lol

Answer 7

I knew I did something wrong somewhere because at first the equations werent coming equal, but so the answer is 6?

Answer 8

My answer is 12 -_-

Answer 9

I dont think " x " could be 12 lol

Answer 10

It is not 12.

y= 2

So

x-y=4
x-2=4
x=6

and also

x+y=8
x+2=8
x=6

So yes 6 is correct :)

Answer 11

Yes ! Well I think I got this section of my work under wraps ill be back with my next lesson in about an hour thank you for the help

Answer 12

Well sorry about the wrong answer :/

Answer 13

its cool