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Metode substitusi3y + 2x = 5 ( persamaan 1 )
4y - x = 3 ( persamaan 2 )
Kita lihat persamaan 2.
4y - x = 3
-x = 3-4y
x = -(3-4y)
x = 4y-3 ( persamaan 3 )
Lalu kita masukkan nilai x diatas pada persamaan 1
3y + 2x = 5
3y + 2(4y-3) = 5
3y + 8y - 6 = 5
11y = 11
y = 1
Nah sekarang kita masukkan saja nilai y diatas pada persamaan 3.
x = 4y-3
x = 4(1) - 3
x = 1
Maka x = 1 dan y = 1
Semoga membantu.