0.8(a+6)+0.2a=-0.2

Solution for 0.8(a+6)+0.2a=-0.2 equation:

Simplifying
0.8(a + 6) + 0.2a = -0.2

Reorder the terms:
0.8(6 + a) + 0.2a = -0.2
(6 * 0.8 + a * 0.8) + 0.2a = -0.2
(4.8 + 0.8a) + 0.2a = -0.2

Combine like terms: 0.8a + 0.2a = 1a
4.8 + 1a = -0.2

Solving
4.8 + 1a = -0.2

Solving for variable 'a'.

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

Add '-4.8' to each side of the equation.
4.8 + -4.8 + 1a = -0.2 + -4.8

Combine like terms: 4.8 + -4.8 = 0.0
0.0 + 1a = -0.2 + -4.8
1a = -0.2 + -4.8

Combine like terms: -0.2 + -4.8 = -5
1a = -5

Divide each side by '1'.
a = -5

Simplifying
a = -5