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Mathematics 7 Online
OpenStudy (anonymous):

3x + y = 2 y + 4 = 3x 3x + 3x - 4 = 2 3x + 3 - 4x = 2 3x + 3x + 4 = 2

OpenStudy (anonymous):

For the following system, use the second equation to make a substitution for y in the first equation.

OpenStudy (rowbe98):

First you need to isolate y in the second equation, so you have y=something.

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