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-4x +3y = 5 x2
15x -6y = -3
-8x +6y = 10 +
7x = 7
x = 1
5(1) - 2y = -1
5 - 2y = -1
-2y = -6
y = 3
himpunan penyelesaian (x,y) = (1,3)