3a+(3-a)=

Solution for 3a+(3-a)= equation:

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

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

Reorder the terms:
3 + 3a + -1a = 0

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

Solving
3 + 2a = 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 + 2a = 0 + -3

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

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

Divide each side by '2'.
a = -1.5

Simplifying
a = -1.5