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3x + 2y = 17. | x2 | 6x + 4y = 34
lalu dikurang hasilnya jadi
5y = -10
y = -2
lalu disubtitusikan
2x + 3y = 8
2x + 3(-2) = 8
2x -6 = 8
2x = 8+6
2x = 14
x= 7
y= -2 da x=7
2... 3x+2y=17 (×2)→ 6x+4y=34
eliminasi nilai x, hasilnya
5y=-10
y=-2
subs. nilai y ke pers. 1
2x+3(-2)=8
2x-6=8
2x=14
x=7