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OpenStudy (anonymous):
For the following system, use the second equation to make a substitution for y in the first equation. 3x + y = 2 y + 4 = 3x
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OpenStudy (anonymous):
3x+ 3 - 4x= 2?
OpenStudy (anonymous):
solve for y on the second equation
OpenStudy (anonymous):
-1?
OpenStudy (anonymous):
y + 4 = 3x y + 4-4 = 3x-4 y = 3x-4 Plug that into 3x + y = 2 What do you get then?
OpenStudy (anonymous):
3x+ 3x- 4 = 2?
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OpenStudy (anonymous):
Yes you are correct. Then solve for x
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