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Mathematics 10 Online
OpenStudy (anonymous):

Solve the system. What is the value of x? y = 3x and 4x + 2y = 30 A. 3 B. -3 C. 9 D. -9

OpenStudy (eyust707):

put "3x" in for y

OpenStudy (eyust707):

so then you have 4x + 2 (3x) = 30

OpenStudy (eyust707):

get it?

OpenStudy (anonymous):

So do I just plug in one of those numbers for x and the one that equals 30 is the right answer? Or am I completely off?

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