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Mathematics 13 Online
OpenStudy (anonymous):

x + 3 = y 3x + 4y = 7 i know it's going to be; 3x + 4(x + 3) = 7 but what next? (:

OpenStudy (anonymous):

3x +4x+12=7 7x=-5 x=-5/7

OpenStudy (anonymous):

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