Respuesta :

Answer:

11. (-3, -1)

Step-by-step explanation:

11.

-8x+y=23

solve for y by y= 23+8x

substitute the given value of y into the equation

-x-4(23+8x) = 7

solve for x and get x = -3

substitute the -3 for x

y= 23+8 x (-3)

y= 23 + (-4)

y = -1

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