-0.1+0.4a-0.1-0.5a=

Solution for -0.1+0.4a-0.1-0.5a= equation:

Simplifying
-0.1 + 0.4a + -0.1 + -0.5a = 0

Reorder the terms:
-0.1 + -0.1 + 0.4a + -0.5a = 0

Combine like terms: -0.1 + -0.1 = -0.2
-0.2 + 0.4a + -0.5a = 0

Combine like terms: 0.4a + -0.5a = -0.1a
-0.2 + -0.1a = 0

Solving
-0.2 + -0.1a = 0

Solving for variable 'a'.

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

Add '0.2' to each side of the equation.
-0.2 + 0.2 + -0.1a = 0 + 0.2

Combine like terms: -0.2 + 0.2 = 0.0
0.0 + -0.1a = 0 + 0.2
-0.1a = 0 + 0.2

Combine like terms: 0 + 0.2 = 0.2
-0.1a = 0.2

Divide each side by '-0.1'.
a = -2

Simplifying
a = -2