3a^2=9a

Solution for 3a^2=9a equation:

Simplifying
3a2 = 9a

Solving
3a2 = 9a

Solving for variable 'a'.

Reorder the terms:
-9a + 3a2 = 9a + -9a

Combine like terms: 9a + -9a = 0
-9a + 3a2 = 0

Factor out the Greatest Common Factor (GCF), '3a'.
3a(-3 + a) = 0

Ignore the factor 3.
Subproblem 1
Set the factor 'a' equal to zero and attempt to solve:

Simplifying
a = 0

Solving
a = 0

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

Simplifying
a = 0
Subproblem 2
Set the factor '(-3 + a)' equal to zero and attempt to solve:

Simplifying
-3 + a = 0

Solving
-3 + a = 0

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

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

Combine like terms: -3 + 3 = 0
0 + a = 0 + 3
a = 0 + 3

Combine like terms: 0 + 3 = 3
a = 3

Simplifying
a = 3
Solution
a = {0, 3}