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2x - 3y = 1
eliminasi jadi
10x - 14y = 6
10x - 15y = 5 -
-y = -1
y = 1
substitusikan y = 1
2x - 3.(1) = 1
2x - 3 = 1
2x = 4
x = 2
titik koordinat (x,y) = (2,1)