SOLUTION: 2x+y=7 2x-2y=-8 Could someone please help me?

Question 120848: 2x+y=7
2x-2y=-8
Could someone please help me?
Found 3 solutions by checkley71, Dailey27, Fombitz:
Answer by checkley71(8403)   (Show Source): You can put this solution on YOUR website!
2x+y=7
2x-2y=-8 now subtract these equations
-------------------------------
3y=15
y=15/3
y=5 answer
2x+5=7
2x=7-5
2x=2
x=2/2
x=1 answer.
proof
2*1-2*5=-8
2-10=-8
-8=-8
(graph 300x200 pixels, x from -6 to 5, y from -10 to 10, of TWO functions y = -2x +7 and y = x +4).
Answer by Dailey27(1)   (Show Source): You can put this solution on YOUR website!
x=3 y=1
Answer by Fombitz(32388)   (Show Source): You can put this solution on YOUR website!
1.
2.
Use equation 1 to get 2x in terms of y and then substitute into equation 2.

2.

Then from 1,

Check your answers.
1.

True statement.
2.

True statement.
Your answers led to true statements.
They are good answers.
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