1.9a-0.9a-1.5=-1.5

Solution for 1.9a-0.9a-1.5=-1.5 equation:

Simplifying
1.9a + -0.9a + -1.5 = -1.5

Reorder the terms:
-1.5 + 1.9a + -0.9a = -1.5

Combine like terms: 1.9a + -0.9a = 1a
-1.5 + 1a = -1.5

Add '1.5' to each side of the equation.
-1.5 + 1.5 + 1a = -1.5 + 1.5

Combine like terms: -1.5 + 1.5 = 0.0
0.0 + 1a = -1.5 + 1.5
1a = -1.5 + 1.5

Combine like terms: -1.5 + 1.5 = 0.0
1a = 0.0

Solving
1a = 0.0

Solving for variable 'a'.

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

Divide each side by '1'.
a = 0.0

Simplifying
a = 0.0