a+(6+a)=36

Solution for a+(6+a)=36 equation:

Simplifying
a + (6 + a) = 36

Remove parenthesis around (6 + a)
a + 6 + a = 36

Reorder the terms:
6 + a + a = 36

Combine like terms: a + a = 2a
6 + 2a = 36

Solving
6 + 2a = 36

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 + 2a = 36 + -6

Combine like terms: 6 + -6 = 0
0 + 2a = 36 + -6
2a = 36 + -6

Combine like terms: 36 + -6 = 30
2a = 30

Divide each side by '2'.
a = 15

Simplifying
a = 15