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Mathematics 9 Online
OpenStudy (anonymous):

2a - 4b = 6 a + 2b = -3 I need to solve by substitution.

OpenStudy (anonymous):

Okay i'm here hahaa lemme see if i understand this :D

OpenStudy (anonymous):

do the same thing as last time... get one variable by itself and you get |dw:1348539121996:dw|

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