3a-4b+6+9a-5b-9=

Solution for 3a-4b+6+9a-5b-9= equation:

Simplifying
3a + -4b + 6 + 9a + -5b + -9 = 0

Reorder the terms:
6 + -9 + 3a + 9a + -4b + -5b = 0

Combine like terms: 6 + -9 = -3
-3 + 3a + 9a + -4b + -5b = 0

Combine like terms: 3a + 9a = 12a
-3 + 12a + -4b + -5b = 0

Combine like terms: -4b + -5b = -9b
-3 + 12a + -9b = 0

Solving
-3 + 12a + -9b = 0

Solving for variable 'a'.

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

Add '3' to each side of the equation.
-3 + 12a + 3 + -9b = 0 + 3

Reorder the terms:
-3 + 3 + 12a + -9b = 0 + 3

Combine like terms: -3 + 3 = 0
0 + 12a + -9b = 0 + 3
12a + -9b = 0 + 3

Combine like terms: 0 + 3 = 3
12a + -9b = 3

Add '9b' to each side of the equation.
12a + -9b + 9b = 3 + 9b

Combine like terms: -9b + 9b = 0
12a + 0 = 3 + 9b
12a = 3 + 9b

Divide each side by '12'.
a = 0.25 + 0.75b

Simplifying
a = 0.25 + 0.75b