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Mathematics 7 Online
OpenStudy (anonymous):

Solve for x in the proportion:

OpenStudy (anonymous):

OpenStudy (anonymous):

cross multiple: 3x(x) = -1(3x - 36). 3x^2 = -3x + 36 3x^2 + 3x - 36 = 0 divided by 3: x^2 + x - 12 = 0. .. ...

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