-1+5a-9(-2+5a)+6=

Solution for -1+5a-9(-2+5a)+6= equation:

Simplifying
-1 + 5a + -9(-2 + 5a) + 6 = 0
-1 + 5a + (-2 * -9 + 5a * -9) + 6 = 0
-1 + 5a + (18 + -45a) + 6 = 0

Reorder the terms:
-1 + 18 + 6 + 5a + -45a = 0

Combine like terms: -1 + 18 = 17
17 + 6 + 5a + -45a = 0

Combine like terms: 17 + 6 = 23
23 + 5a + -45a = 0

Combine like terms: 5a + -45a = -40a
23 + -40a = 0

Solving
23 + -40a = 0

Solving for variable 'a'.

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

Add '-23' to each side of the equation.
23 + -23 + -40a = 0 + -23

Combine like terms: 23 + -23 = 0
0 + -40a = 0 + -23
-40a = 0 + -23

Combine like terms: 0 + -23 = -23
-40a = -23

Divide each side by '-40'.
a = 0.575

Simplifying
a = 0.575