-8.5(5+6a)=-26.5

Solution for -8.5(5+6a)=-26.5 equation:

Simplifying
-8.5(5 + 6a) = -26.5
(5 * -8.5 + 6a * -8.5) = -26.5
(-42.5 + -51a) = -26.5

Solving
-42.5 + -51a = -26.5

Solving for variable 'a'.

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

Add '42.5' to each side of the equation.
-42.5 + 42.5 + -51a = -26.5 + 42.5

Combine like terms: -42.5 + 42.5 = 0.0
0.0 + -51a = -26.5 + 42.5
-51a = -26.5 + 42.5

Combine like terms: -26.5 + 42.5 = 16
-51a = 16

Divide each side by '-51'.
a = -0.3137254902

Simplifying
a = -0.3137254902