6+(3+5a)+7-(6+2a)-4-2a=

Solution for 6+(3+5a)+7-(6+2a)-4-2a= equation:

Simplifying
6 + (3 + 5a) + 7 + -1(6 + 2a) + -4 + -2a = 0

Remove parenthesis around (3 + 5a)
6 + 3 + 5a + 7 + -1(6 + 2a) + -4 + -2a = 0
6 + 3 + 5a + 7 + (6 * -1 + 2a * -1) + -4 + -2a = 0
6 + 3 + 5a + 7 + (-6 + -2a) + -4 + -2a = 0

Reorder the terms:
6 + 3 + 7 + -6 + -4 + 5a + -2a + -2a = 0

Combine like terms: 6 + 3 = 9
9 + 7 + -6 + -4 + 5a + -2a + -2a = 0

Combine like terms: 9 + 7 = 16
16 + -6 + -4 + 5a + -2a + -2a = 0

Combine like terms: 16 + -6 = 10
10 + -4 + 5a + -2a + -2a = 0

Combine like terms: 10 + -4 = 6
6 + 5a + -2a + -2a = 0

Combine like terms: 5a + -2a = 3a
6 + 3a + -2a = 0

Combine like terms: 3a + -2a = 1a
6 + 1a = 0

Solving
6 + 1a = 0

Solving for variable 'a'.

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

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

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

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

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

Simplifying
a = -6