Metode eliminasi 4x-3y-15=0 dan 6x+9y+ 9=0

≡ penyelesaian :

⇔4x - 3y - 15 = 0
⇔4x - 3y = 15

⇔6x + 9y + 9 = 0
⇔6x + 9y = -9

⇔gunakan metode eliminasi.

⇒4x - 3y = 15 |×6|
⇒6x + 9y = -9 |×4|

⇒24x - 18y = 90
⇒24x + 36y = -36
--------------------------- +
⇒18y = 54
⇒y = 54 / 18
⇒y = 3

⇔kemudian, gunakan metode substitusi.

⇒4x - 3y = 15
⇒4x - 3(3) = 15
⇒4x - 9 = 15
⇒4x = 15 + 9
⇒4x = 24
⇒x = 24 / 4
⇒x = 6

Maka ,
HP = { x , y } { 6 , 3 }

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