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Mathematics 18 Online
OpenStudy (anonymous):

2x - 3y = 4 x + 4y = -9

OpenStudy (anonymous):

solve for only one variable using the first (or second equation) then plug that answer back into the other equation

hero (hero):

There's multiple methods of solving these

OpenStudy (anonymous):

example solve for x in equation 1, then plug that answer (which will include only y) back into the second equation and solve for y.

hero (hero):

I prefer to put both equations in the form y = mx + b, then set y = y and solve for values of x and y

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