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OpenStudy (anonymous):
What is a possible first step to eliminate the variable y in the following system? 4x + 6y = 1 5x – 3y = 8
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OpenStudy (anonymous):
i know i have to multiply but not sure if the first or second equation and by which number?
OpenStudy (anonymous):
my answer is multiply the second equation by 2
OpenStudy (anonymous):
am i correct?
OpenStudy (anonymous):
You can multiply the second one by 2, so you get a -6y term. 4x + 6y = 1 2(5x -3y) =8 ---- 4x + 6y =1 10x -6y = 8 then you can cancel the 6y's
OpenStudy (anonymous):
yep you are correct!
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OpenStudy (anonymous):
thank you that is what i was thinking
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