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OpenStudy (anonymous):
Solving Systems of Equations by Substitution. -5x + y = -2 -3x + 6y =-12
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OpenStudy (anonymous):
Well y=5x-2 So -3x+5x-2=-12, solve
OpenStudy (anonymous):
Multiply the top by -6 and add the equations together, then solve for x. Plug the x back in to get y
OpenStudy (anonymous):
paintballcs's method is actually more pure substitution, so I would do it that way
OpenStudy (anonymous):
y = -2 + 5x -3x + 6 (-2 + 5x) = -12 -3x -12 + 30x = -12 27x = 0 x = 0
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