Using elimination to solve the system 2x + y = 8 and x + y = 4, which of the following could be the first step?
A. 2x + y = 8-------- 2x + y = 8
(x + y = 4)(-1)--- -x - y = -4
B. 2x + (4 - x) = 8
C. 2x + y = x + y
D. 3x + 2y = 12
E. x = 4

Question

Using elimination to solve the system 2x + y = 8 and x + y = 4, which of the following could be the first step?
	A.	2x + y = 8--------> 2x + y = 8
(x + y = 4)(-1)---> -x - y = -4
	B.	2x + (4 - x) = 8
	C.	2x + y = x + y
	D.	3x + 2y = 12
	E.	x = 4

anonymous · Answer

D. 
Lol, this is so easy.

anonymous · Answer

really i am really bad with these

anonymous · Answer

All you do is take 2x and x add those together, then add the y's, then add the = stuff. 
That's how you start solving it.

anonymous · Answer

Solve the system. What is the value of x?
y = 3x and 4x + 2y = 30
	A.	3
	B.	-3
	C.	9
	D.	-9
and i don't get these either

hero · Answer

A should be it

anonymous · Answer

2x+y=8
x+y=4

subtract.

x=4

i'd say b