-3-[(2-1)-(3+4)]=x

Solution for -3-[(2-1)-(3+4)]=x equation:

Simplifying
-3 + -1[(2 + -1) + -1(3 + 4)] = x

Combine like terms: 2 + -1 = 1
-3 + -1[(1) + -1(3 + 4)] = x
-3 + -1[1 + -1(3 + 4)] = x

Combine like terms: 3 + 4 = 7
-3 + -1[1 + -1(7)] = x

Multiply -1 * 7
-3 + -1[1 + -7] = x

Combine like terms: 1 + -7 = -6
-3 + -1[-6] = x

Multiply -1 * -6
-3 + 6 = x

Combine like terms: -3 + 6 = 3
3 = x

Solving
3 = 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.
3 + -1x = x + -1x

Combine like terms: x + -1x = 0
3 + -1x = 0

Add '-3' to each side of the equation.
3 + -3 + -1x = 0 + -3

Combine like terms: 3 + -3 = 0
0 + -1x = 0 + -3
-1x = 0 + -3

Combine like terms: 0 + -3 = -3
-1x = -3

Divide each side by '-1'.
x = 3

Simplifying
x = 3