81=3x-4

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Solution for 81=3x-4 equation:


Simplifying
81 = 3x + -4

Reorder the terms:
81 = -4 + 3x

Solving
81 = -4 + 3x

Solving for variable 'x'.

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

Add '-3x' to each side of the equation.
81 + -3x = -4 + 3x + -3x

Combine like terms: 3x + -3x = 0
81 + -3x = -4 + 0
81 + -3x = -4

Add '-81' to each side of the equation.
81 + -81 + -3x = -4 + -81

Combine like terms: 81 + -81 = 0
0 + -3x = -4 + -81
-3x = -4 + -81

Combine like terms: -4 + -81 = -85
-3x = -85

Divide each side by '-3'.
x = 28.33333333

Simplifying
x = 28.33333333

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