.8(4+-a)=5.6a

Solution for .8(4+-a)=5.6a equation:

Simplifying
0.8(4 + -1a) = 5.6a
(4 * 0.8 + -1a * 0.8) = 5.6a
(3.2 + -0.8a) = 5.6a

Solving
3.2 + -0.8a = 5.6a

Solving for variable 'a'.

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

Add '-5.6a' to each side of the equation.
3.2 + -0.8a + -5.6a = 5.6a + -5.6a

Combine like terms: -0.8a + -5.6a = -6.4a
3.2 + -6.4a = 5.6a + -5.6a

Combine like terms: 5.6a + -5.6a = 0.0
3.2 + -6.4a = 0.0

Add '-3.2' to each side of the equation.
3.2 + -3.2 + -6.4a = 0.0 + -3.2

Combine like terms: 3.2 + -3.2 = 0.0
0.0 + -6.4a = 0.0 + -3.2
-6.4a = 0.0 + -3.2

Combine like terms: 0.0 + -3.2 = -3.2
-6.4a = -3.2

Divide each side by '-6.4'.
a = 0.5

Simplifying
a = 0.5