4x+81=-12

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Solution for 4x+81=-12 equation: 


Simplifying
4x + 81 = -12

Reorder the terms:
81 + 4x = -12

Solving
81 + 4x = -12

Solving for variable 'x'.

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

Add '-81' to each side of the equation.
81 + -81 + 4x = -12 + -81

Combine like terms: 81 + -81 = 0
0 + 4x = -12 + -81
4x = -12 + -81

Combine like terms: -12 + -81 = -93
4x = -93

Divide each side by '4'.
x = -23.25

Simplifying
x = -23.25

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