3-4x=81

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Solution for 3-4x=81 equation: 


Simplifying
3 + -4x = 81

Solving
3 + -4x = 81

Solving for variable 'x'.

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

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

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

Combine like terms: 81 + -3 = 78
-4x = 78

Divide each side by '-4'.
x = -19.5

Simplifying
x = -19.5

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