-6-2a-6a=1-9a-9+9

Solution for -6-2a-6a=1-9a-9+9 equation:

Simplifying
-6 + -2a + -6a = 1 + -9a + -9 + 9

Combine like terms: -2a + -6a = -8a
-6 + -8a = 1 + -9a + -9 + 9

Reorder the terms:
-6 + -8a = 1 + -9 + 9 + -9a

Combine like terms: 1 + -9 = -8
-6 + -8a = -8 + 9 + -9a

Combine like terms: -8 + 9 = 1
-6 + -8a = 1 + -9a

Solving
-6 + -8a = 1 + -9a

Solving for variable 'a'.

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

Add '9a' to each side of the equation.
-6 + -8a + 9a = 1 + -9a + 9a

Combine like terms: -8a + 9a = 1a
-6 + 1a = 1 + -9a + 9a

Combine like terms: -9a + 9a = 0
-6 + 1a = 1 + 0
-6 + 1a = 1

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

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

Combine like terms: 1 + 6 = 7
1a = 7

Divide each side by '1'.
a = 7

Simplifying
a = 7