-(4-(x+2)-x-(-x+4))-(x-10)=a

Solution for -(4-(x+2)-x-(-x+4))-(x-10)=a equation:

Simplifying
-1(4 + -1(x + 2) + -1x + -1(-1x + 4)) + -1(x + -10) = a

Reorder the terms:
-1(4 + -1(2 + x) + -1x + -1(-1x + 4)) + -1(x + -10) = a
-1(4 + (2 * -1 + x * -1) + -1x + -1(-1x + 4)) + -1(x + -10) = a
-1(4 + (-2 + -1x) + -1x + -1(-1x + 4)) + -1(x + -10) = a

Reorder the terms:
-1(4 + -2 + -1x + -1x + -1(4 + -1x)) + -1(x + -10) = a
-1(4 + -2 + -1x + -1x + (4 * -1 + -1x * -1)) + -1(x + -10) = a
-1(4 + -2 + -1x + -1x + (-4 + 1x)) + -1(x + -10) = a

Reorder the terms:
-1(4 + -2 + -4 + -1x + -1x + 1x) + -1(x + -10) = a

Combine like terms: 4 + -2 = 2
-1(2 + -4 + -1x + -1x + 1x) + -1(x + -10) = a

Combine like terms: 2 + -4 = -2
-1(-2 + -1x + -1x + 1x) + -1(x + -10) = a

Combine like terms: -1x + -1x = -2x
-1(-2 + -2x + 1x) + -1(x + -10) = a

Combine like terms: -2x + 1x = -1x
-1(-2 + -1x) + -1(x + -10) = a
(-2 * -1 + -1x * -1) + -1(x + -10) = a
(2 + 1x) + -1(x + -10) = a

Reorder the terms:
2 + 1x + -1(-10 + x) = a
2 + 1x + (-10 * -1 + x * -1) = a
2 + 1x + (10 + -1x) = a

Reorder the terms:
2 + 10 + 1x + -1x = a

Combine like terms: 2 + 10 = 12
12 + 1x + -1x = a

Combine like terms: 1x + -1x = 0
12 + 0 = a
12 = a

Solving
12 = a

Solving for variable 'a'.

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

Add '-1a' to each side of the equation.
12 + -1a = a + -1a

Combine like terms: a + -1a = 0
12 + -1a = 0

Add '-12' to each side of the equation.
12 + -12 + -1a = 0 + -12

Combine like terms: 12 + -12 = 0
0 + -1a = 0 + -12
-1a = 0 + -12

Combine like terms: 0 + -12 = -12
-1a = -12

Divide each side by '-1'.
a = 12

Simplifying
a = 12