7g^2=21g

Solution for 7g^2=21g equation:

Simplifying
7g2 = 21g

Solving
7g2 = 21g

Solving for variable 'g'.

Reorder the terms:
-21g + 7g2 = 21g + -21g

Combine like terms: 21g + -21g = 0
-21g + 7g2 = 0

Factor out the Greatest Common Factor (GCF), '7g'.
7g(-3 + g) = 0

Ignore the factor 7.
Subproblem 1
Set the factor 'g' equal to zero and attempt to solve:

Simplifying
g = 0

Solving
g = 0

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

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

Simplifying
-3 + g = 0

Solving
-3 + g = 0

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

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

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

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

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