9x^2-9x+4=7x^2

Solution for 9x^2-9x+4=7x^2 equation:

Simplifying
9x2 + -9x + 4 = 7x2

Reorder the terms:
4 + -9x + 9x2 = 7x2

Solving
4 + -9x + 9x2 = 7x2

Solving for variable 'x'.

Combine like terms: 9x2 + -7x2 = 2x2
4 + -9x + 2x2 = 7x2 + -7x2

Combine like terms: 7x2 + -7x2 = 0
4 + -9x + 2x2 = 0

Factor a trinomial.
(1 + -2x)(4 + -1x) = 0

Subproblem 1
Set the factor '(1 + -2x)' equal to zero and attempt to solve:

Simplifying
1 + -2x = 0

Solving
1 + -2x = 0

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

Add '-1' to each side of the equation.
1 + -1 + -2x = 0 + -1

Combine like terms: 1 + -1 = 0
0 + -2x = 0 + -1
-2x = 0 + -1

Combine like terms: 0 + -1 = -1
-2x = -1

Divide each side by '-2'.
x = 0.5

Simplifying
x = 0.5
Subproblem 2
Set the factor '(4 + -1x)' equal to zero and attempt to solve:

Simplifying
4 + -1x = 0

Solving
4 + -1x = 0

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

Add '-4' to each side of the equation.
4 + -4 + -1x = 0 + -4

Combine like terms: 4 + -4 = 0
0 + -1x = 0 + -4
-1x = 0 + -4

Combine like terms: 0 + -4 = -4
-1x = -4

Divide each side by '-1'.
x = 4

Simplifying
x = 4
Solution
x = {0.5, 4}