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4x - y = 1
4x - (x + 2) = 1
4x - x - 2 = 1
3x = 3
x = 1
y = x +2
y = x+2
4x -1 = x +2
4x -x = 2 +1
3x = 3
x = 3/3
x = 1
y = 4x -1
y = 4(1) -1
y = 4 -1
y = 3
Jadi, himpunan penyelesaiannya adalah {(1,3)}.
Itu jawabannya.