a+-(b-a)+(b+a)=

Solution for a+-(b-a)+(b+a)= equation:

Simplifying
a + -1(b + -1a) + (b + a) = 0

Reorder the terms:
a + -1(-1a + b) + (b + a) = 0
a + (-1a * -1 + b * -1) + (b + a) = 0
a + (1a + -1b) + (b + a) = 0

Reorder the terms:
a + 1a + -1b + (a + b) = 0

Remove parenthesis around (a + b)
a + 1a + -1b + a + b = 0

Reorder the terms:
a + 1a + a + -1b + b = 0

Combine like terms: a + 1a = 2a
2a + a + -1b + b = 0

Combine like terms: 2a + a = 3a
3a + -1b + b = 0

Combine like terms: -1b + b = 0
3a + 0 = 0
3a = 0

Solving
3a = 0

Solving for variable 'a'.

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

Divide each side by '3'.
a = 0

Simplifying
a = 0