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2x = x-3
2x- x = x-x -3
x = -3
:) smoga bermanfaat
maka x = y+3
lalu distribusikan nilai x ke pers.2
y = 2x
maka y = 2 (y+3)
y = 2y + 6
y-2y=6
-y=6
maka y = -6
lalu masukkan nilai y ke pers 1
y=x-3
-6 = x-3
-6+3 =x
-3 =x
maka x= -3
maka didapat HP= (-3 , -6)