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Mathematics 13 Online
OpenStudy (anonymous):

solve the following system of linear equations by substitution: -4x+2y=2 and -2x+y=-21

OpenStudy (anonymous):

To solve by substitution you simply solve one of the equations for one of your variables. Then plug in the expression you get for that variable in the other equation. For example, pick one of these two equations to solve...

OpenStudy (anonymous):

5.5,-10

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