81=4x-19

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Solution for 81=4x-19 equation:


Simplifying
81 = 4x + -19

Reorder the terms:
81 = -19 + 4x

Solving
81 = -19 + 4x

Solving for variable 'x'.

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

Add '-4x' to each side of the equation.
81 + -4x = -19 + 4x + -4x

Combine like terms: 4x + -4x = 0
81 + -4x = -19 + 0
81 + -4x = -19

Add '-81' to each side of the equation.
81 + -81 + -4x = -19 + -81

Combine like terms: 81 + -81 = 0
0 + -4x = -19 + -81
-4x = -19 + -81

Combine like terms: -19 + -81 = -100
-4x = -100

Divide each side by '-4'.
x = 25

Simplifying
x = 25

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