5x-81=9x+9

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Solution for 5x-81=9x+9 equation:


Simplifying
5x + -81 = 9x + 9

Reorder the terms:
-81 + 5x = 9x + 9

Reorder the terms:
-81 + 5x = 9 + 9x

Solving
-81 + 5x = 9 + 9x

Solving for variable 'x'.

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

Add '-9x' to each side of the equation.
-81 + 5x + -9x = 9 + 9x + -9x

Combine like terms: 5x + -9x = -4x
-81 + -4x = 9 + 9x + -9x

Combine like terms: 9x + -9x = 0
-81 + -4x = 9 + 0
-81 + -4x = 9

Add '81' to each side of the equation.
-81 + 81 + -4x = 9 + 81

Combine like terms: -81 + 81 = 0
0 + -4x = 9 + 81
-4x = 9 + 81

Combine like terms: 9 + 81 = 90
-4x = 90

Divide each side by '-4'.
x = -22.5

Simplifying
x = -22.5

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