-1.3=9.5a-8.5a-8.5

Solution for -1.3=9.5a-8.5a-8.5 equation:

Simplifying
-1.3 = 9.5a + -8.5a + -8.5

Reorder the terms:
-1.3 = -8.5 + 9.5a + -8.5a

Combine like terms: 9.5a + -8.5a = 1a
-1.3 = -8.5 + 1a

Solving
-1.3 = -8.5 + 1a

Solving for variable 'a'.

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

Add '-1a' to each side of the equation.
-1.3 + -1a = -8.5 + 1a + -1a

Combine like terms: 1a + -1a = 0
-1.3 + -1a = -8.5 + 0
-1.3 + -1a = -8.5

Add '1.3' to each side of the equation.
-1.3 + 1.3 + -1a = -8.5 + 1.3

Combine like terms: -1.3 + 1.3 = 0.0
0.0 + -1a = -8.5 + 1.3
-1a = -8.5 + 1.3

Combine like terms: -8.5 + 1.3 = -7.2
-1a = -7.2

Divide each side by '-1'.
a = 7.2

Simplifying
a = 7.2