-2(a+8)=-23-a

Solution for -2(a+8)=-23-a equation:

Simplifying
-2(a + 8) = -23 + -1a

Reorder the terms:
-2(8 + a) = -23 + -1a
(8 * -2 + a * -2) = -23 + -1a
(-16 + -2a) = -23 + -1a

Solving
-16 + -2a = -23 + -1a

Solving for variable 'a'.

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

Add 'a' to each side of the equation.
-16 + -2a + a = -23 + -1a + a

Combine like terms: -2a + a = -1a
-16 + -1a = -23 + -1a + a

Combine like terms: -1a + a = 0
-16 + -1a = -23 + 0
-16 + -1a = -23

Add '16' to each side of the equation.
-16 + 16 + -1a = -23 + 16

Combine like terms: -16 + 16 = 0
0 + -1a = -23 + 16
-1a = -23 + 16

Combine like terms: -23 + 16 = -7
-1a = -7

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

Simplifying
a = 7