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3x + 2y = 11 | x 1| 3x + 2y = 11 -
x = 3
substitusi x = 3 ke : 2x + y = 7
2(3) + y = 7
6 + y = 7
y = 7 - 6
y = 1
Jadi titik potong garis : ( 3, 1 )