6x-9=2x-81

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Solution for 6x-9=2x-81 equation:


Simplifying
6x + -9 = 2x + -81

Reorder the terms:
-9 + 6x = 2x + -81

Reorder the terms:
-9 + 6x = -81 + 2x

Solving
-9 + 6x = -81 + 2x

Solving for variable 'x'.

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

Add '-2x' to each side of the equation.
-9 + 6x + -2x = -81 + 2x + -2x

Combine like terms: 6x + -2x = 4x
-9 + 4x = -81 + 2x + -2x

Combine like terms: 2x + -2x = 0
-9 + 4x = -81 + 0
-9 + 4x = -81

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

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

Combine like terms: -81 + 9 = -72
4x = -72

Divide each side by '4'.
x = -18

Simplifying
x = -18

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