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Mathematics 20 Online
OpenStudy (vshiroky):

attachment in comments

OpenStudy (vshiroky):

OpenStudy (anonymous):

Adding both sides 3x+9y=-3 x+3y=-1 x=-3y-1 x+5y=1 substitute the value of x and find the value of y and then x.

OpenStudy (anonymous):

correction adding both equations

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