x+3y=1 dan2x-3y=11. nilai dari 4x-3y=....

Gunakan metode eliminasi

x + 3y = 1
2x - 3y = 11
--------------------(-)
x = -10

Sibtusikan x → - 10

x + 3y = 1
-10 + 3y = 1
3y = 1 + 11
y = 12/3
y = 4

HP = [[ - 10 ] [ 4 ]]