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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
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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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