3+[-(-8)]=x

Solution for 3+[-(-8)]=x equation:

Simplifying
3 + [-1(-8)] = x

Multiply -1 * -8
3 + [8] = x
3 + 8 = x

Combine like terms: 3 + 8 = 11
11 = x

Solving
11 = 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.
11 + -1x = x + -1x

Combine like terms: x + -1x = 0
11 + -1x = 0

Add '-11' to each side of the equation.
11 + -11 + -1x = 0 + -11

Combine like terms: 11 + -11 = 0
0 + -1x = 0 + -11
-1x = 0 + -11

Combine like terms: 0 + -11 = -11
-1x = -11

Divide each side by '-1'.
x = 11

Simplifying
x = 11