(5+6a)-(-1+3)=

Solution for (5+6a)-(-1+3)= equation:

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

Remove parenthesis around (5 + 6a)
5 + 6a + -1(-1 + 3) = 0

Combine like terms: -1 + 3 = 2
5 + 6a + -1(2) = 0

Multiply -1 * 2
5 + 6a + -2 = 0

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

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

Solving
3 + 6a = 0

Solving for variable 'a'.

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

Add '-3' to each side of the equation.
3 + -3 + 6a = 0 + -3

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

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

Divide each side by '6'.
a = -0.5

Simplifying
a = -0.5