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Solve by elimination.

-4x + 9y = 9
x - 3y = -6

2 answers

-4x + 9y = 9

Multiply second equation by 3.

3x - 9y = -18

Add the two equations.

-x = -9

x = 9

Insert x value in the first equation to find y.
9x+9y=9
-9x+y=-19
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