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Mathematics 12 Online
OpenStudy (anonymous):

Solve by substitution y=6x-11 -2x-3y=-7

OpenStudy (anonymous):

Substitute the first equation into the second equation. So you'll get -2x-3(6x-11)=-7 for the 2nd equation

OpenStudy (anonymous):

expand the bracket, then you'll get -2x-18x+33=-7 then -20x=-40 x=2

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