-1-6a=a+6

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

Simplifying
-1 + -6a = a + 6

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

Solving
-1 + -6a = 6 + 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.
-1 + -6a + -1a = 6 + a + -1a

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

Combine like terms: a + -1a = 0
-1 + -7a = 6 + 0
-1 + -7a = 6

Add '1' to each side of the equation.
-1 + 1 + -7a = 6 + 1

Combine like terms: -1 + 1 = 0
0 + -7a = 6 + 1
-7a = 6 + 1

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

Divide each side by '-7'.
a = -1

Simplifying
a = -1