[-4+(-4)]+[7+(-5)]=x

Solution for [-4+(-4)]+[7+(-5)]=x equation:

Simplifying
[-4 + (-4)] + [7 + (-5)] = x
[-4 + -4] + [7 + (-5)] = x

Combine like terms: -4 + -4 = -8
[-8] + [7 + (-5)] = x
-8 + [7 + (-5)] = x
-8 + [7 + -5] = x

Combine like terms: 7 + -5 = 2
-8 + [2] = x
-8 + 2 = x

Combine like terms: -8 + 2 = -6
-6 = x

Solving
-6 = x

Solving for variable 'x'.

Move all terms containing x to the left, all other terms to the right.

Add '-1x' to each side of the equation.
-6 + -1x = x + -1x

Combine like terms: x + -1x = 0
-6 + -1x = 0

Add '6' to each side of the equation.
-6 + 6 + -1x = 0 + 6

Combine like terms: -6 + 6 = 0
0 + -1x = 0 + 6
-1x = 0 + 6

Combine like terms: 0 + 6 = 6
-1x = 6

Divide each side by '-1'.
x = -6

Simplifying
x = -6