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Question 57335: Solve system of linear equation express in ordered pair (x,y)if possible
x - y =4
2x + y =5
I have x= 0.35 I don't think this is correct.
Can you help me please? These are confusing me.
Thanks, dnn
Answer by funmath(2933)   (Show Source):
You can put this solution on YOUR website! Hi dnn, you're right, something went wrong.
Solve system of linear equation express in ordered pair (x,y)if possible
Add the two equations together and you eliminate the y's. Solve for x:
x - y =4
2x + y =5
_________
3x+0=9
3x=9
3x/3=9/3
x=3
Substitute x=3 into one of the original equations and solve for y
(3)-y=4
-3+3-y=4-3
-y=1
-(-y)=-(1)
y=-1
The solution is: (x,y)=(3,-1)
Happy Calculating, dnn!!!
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