0.8(4-a)=5.6

Solution for 0.8(4-a)=5.6 equation:

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

Solving
3.2 + -0.8a = 5.6

Solving for variable 'a'.

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

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

Combine like terms: 3.2 + -3.2 = 0.0
0.0 + -0.8a = 5.6 + -3.2
-0.8a = 5.6 + -3.2

Combine like terms: 5.6 + -3.2 = 2.4
-0.8a = 2.4

Divide each side by '-0.8'.
a = -3

Simplifying
a = -3