Whats the answer to 2x-3y=9 and x-4=y in subsitution form

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1 Answer

Substitute y=x-4 into the other equation:

2x-3(x-4)=9, 2x-3x+12=9, -x+12=9, 12-9=x, so x=3. Therefore y=3-4=-1.

Solution is (x,y)=(3,-1).

by Top Rated User (1.1m points)

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