diketahui 3x-4y=8 dan x-2y-4=0,nilai dari 2x+y adalah...

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3x - 4y = 8
x - 2y - 4 = 0 => x - 2y = 4
3x - 4y = 8 [x1] 3x - 4y = 8
x - 2y = 4 [x2] 2x - 4y = 8
---------------- -
x = 0
3x - 4y = 8
3(0) - 4y = 8
-4y = 8 - 0
y = 8 / -4
y = - 2

=> x= 0, y= - 2
=>2x + y
= 2(0) + - 2
= 0 + (-2)
= - 2
Semoga membantu :)