-2 [y-1]при x=-4

Решение:

Given equation: -2[y-1] when x = -4

First, let's substitute x = -4 into the equation and simplify.

-2[y-1] = -2 * [-4 - 1]
-2[y-1] = -2 * [-5]
-2[y-1] = -2 * -5
-2[y-1] = 10

Now, let's simplify the equation further:

-2[y-1] = 10
-2y + 2 = 10
-2y = 10 - 2
-2y = 8

Finally, divide by -2 to solve for y:

-2y / -2 = 8 / -2
y = -4

Therefore, when x = -4, y = -4.