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Mathematics 14 Online
OpenStudy (anonymous):

determine the best method to solve each system of equation.then solve the system. 1.x+2y=3; x+y=1 2.m+6n=-8; m=2n+8 3.a-b=6; a=2b+7 4.4x+y=15; -x-3x=-12 5.3c-d=14; c-d=2 6.x+2y=-9; y=4x

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