6a+6.3+9a=

Solution for 6a+6.3+9a= equation:

Simplifying
6a + 6.3 + 9a = 0

Reorder the terms:
6.3 + 6a + 9a = 0

Combine like terms: 6a + 9a = 15a
6.3 + 15a = 0

Solving
6.3 + 15a = 0

Solving for variable 'a'.

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

Add '-6.3' to each side of the equation.
6.3 + -6.3 + 15a = 0 + -6.3

Combine like terms: 6.3 + -6.3 = 0.0
0.0 + 15a = 0 + -6.3
15a = 0 + -6.3

Combine like terms: 0 + -6.3 = -6.3
15a = -6.3

Divide each side by '15'.
a = -0.42

Simplifying
a = -0.42