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4x -y = -3 ------> y = 4x +3
-3x +2y = 1
-3x +2(4x +3) = 1
-3x +8x +6 = 1
5x = 1 -6
5x = -5
x = -5/5
x = -1
y = 4x +3
y = 4(1) +3
y = 4 +3
y = 7
Jadi, selesaiannya adalah {(1,7)}.
Itu jawabannya.