0.4a-6+0.5a=-5.73

Solution for 0.4a-6+0.5a=-5.73 equation:

Simplifying
0.4a + -6 + 0.5a = -5.73

Reorder the terms:
-6 + 0.4a + 0.5a = -5.73

Combine like terms: 0.4a + 0.5a = 0.9a
-6 + 0.9a = -5.73

Solving
-6 + 0.9a = -5.73

Solving for variable 'a'.

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

Add '6' to each side of the equation.
-6 + 6 + 0.9a = -5.73 + 6

Combine like terms: -6 + 6 = 0
0 + 0.9a = -5.73 + 6
0.9a = -5.73 + 6

Combine like terms: -5.73 + 6 = 0.27
0.9a = 0.27

Divide each side by '0.9'.
a = 0.3

Simplifying
a = 0.3