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Mathematics 20 Online
OpenStudy (anonymous):

Solve the system by substitution. y=2x-1 3x-y=-1 The answer is in the back of my book but I got the wrong answer so I need help on what I did wrong.

OpenStudy (anonymous):

The answer is (-2,-5), but I got (0,-1)

OpenStudy (anonymous):

check out www.khanacademy.com they explain problems like this step by step.

OpenStudy (studygurl14):

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