6=9a-3a

Solution for 6=9a-3a equation:

Simplifying
6 = 9a + -3a

Combine like terms: 9a + -3a = 6a
6 = 6a

Solving
6 = 6a

Solving for variable 'a'.

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

Add '-6a' to each side of the equation.
6 + -6a = 6a + -6a

Combine like terms: 6a + -6a = 0
6 + -6a = 0

Add '-6' to each side of the equation.
6 + -6 + -6a = 0 + -6

Combine like terms: 6 + -6 = 0
0 + -6a = 0 + -6
-6a = 0 + -6

Combine like terms: 0 + -6 = -6
-6a = -6

Divide each side by '-6'.
a = 1

Simplifying
a = 1