6x+9=-6x-81

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


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

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

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

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

Solving for variable 'x'.

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

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

Combine like terms: 6x + 6x = 12x
9 + 12x = -81 + -6x + 6x

Combine like terms: -6x + 6x = 0
9 + 12x = -81 + 0
9 + 12x = -81

Add '-9' to each side of the equation.
9 + -9 + 12x = -81 + -9

Combine like terms: 9 + -9 = 0
0 + 12x = -81 + -9
12x = -81 + -9

Combine like terms: -81 + -9 = -90
12x = -90

Divide each side by '12'.
x = -7.5

Simplifying
x = -7.5

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