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Question 245972: Can someone help me out I do not under
Solve the system by the elimination method
5x+5y=-11
7x-3y=17
It says the solution is an ordered pair and use integers or fractions for any numbers in the expression. Can someone please help me out with this? Thank you so much
Answer by TheProdicalSon(34)   (Show Source):
You can put this solution on YOUR website! Here, this is actually pretty easy to understand.
5x + 5y = -11
7x - 3y = 17
Our goal is to eliminate one of the variables, I'm going to eliminate the y.
Multiply the top one by three, and the bottom one by five.
15x + 15y = -33
35x - 15y = 85
Add the equations together
50x = 52
x = 26/25
insert into orginal problem
5(26/25) + 5y = -11
5.2 + 5y = -11
5y = -16.2
y = -3.24
Check
5.2 - 16.2 = -11
Correct
I believe your algrebra II teacher will want it written as x = 5 1/5, and y = -3 6/25
Comment on my Page if this was helpful.
Sincerly,
Andrew
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