12x-9=5x+9

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Solution for 12x-9=5x+9 equation:


Simplifying
12x + -9 = 5x + 9

Reorder the terms:
-9 + 12x = 5x + 9

Reorder the terms:
-9 + 12x = 9 + 5x

Solving
-9 + 12x = 9 + 5x

Solving for variable 'x'.

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

Add '-5x' to each side of the equation.
-9 + 12x + -5x = 9 + 5x + -5x

Combine like terms: 12x + -5x = 7x
-9 + 7x = 9 + 5x + -5x

Combine like terms: 5x + -5x = 0
-9 + 7x = 9 + 0
-9 + 7x = 9

Add '9' to each side of the equation.
-9 + 9 + 7x = 9 + 9

Combine like terms: -9 + 9 = 0
0 + 7x = 9 + 9
7x = 9 + 9

Combine like terms: 9 + 9 = 18
7x = 18

Divide each side by '7'.
x = 2.571428571

Simplifying
x = 2.571428571

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