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OpenStudy (anonymous):
use elimination to solve the system of equations given by 3x-2y=12 and 3x+5y=33
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OpenStudy (anonymous):
Do you know which variable you can eliminate first?
OpenStudy (anonymous):
would it be x?
OpenStudy (anonymous):
Yup! 3x-3x=0
OpenStudy (anonymous):
3x-2y=12 3x+5y=33 ---------- -7y=-21 y=?
OpenStudy (anonymous):
3?
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OpenStudy (anonymous):
Yup! Now plug the 3 in any of the equations to find x 3x-2(3)=12 OR 3x+5(3)=33
OpenStudy (anonymous):
so would x equal 6?
OpenStudy (anonymous):
How did you get that?
OpenStudy (anonymous):
Just kidding yea that's right
OpenStudy (anonymous):
Thank you!
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OpenStudy (anonymous):
Anytime
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