4x - 8 = 8(x + 2)
4*(2x + 8) = 32
Not necessarily. If the number is 0, then the sum of 8 times the number and -192 is -192.
There is nothing in the description you have given which tells us the amount of that unspecified number, therefore, the answer could be anything. If you want to solve for an unknown number you need an equation. You might have said four times a number added to -9 subtracted from triple the sum of nine times the number and eight is equal to zero. Then we can solve the equation.
The sum of four and negative eight is negative four.
N = the number It's [ 7N + (N+8) ]
8(5 + x), or 8x + 40.
6x + 4 = 5x x = -4