-a-3=a+3

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

Simplifying
-1a + -3 = a + 3

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

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

Solving
-3 + -1a = 3 + a

Solving for variable 'a'.

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

Add '-1a' to each side of the equation.
-3 + -1a + -1a = 3 + a + -1a

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

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

Add '3' to each side of the equation.
-3 + 3 + -2a = 3 + 3

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

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

Divide each side by '-2'.
a = -3

Simplifying
a = -3