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OpenStudy (anonymous):
2x - 3y = 4 x + 4y = -9
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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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