81=x+4x-19

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Solution for 81=x+4x-19 equation:


Simplifying
81 = x + 4x + -19

Reorder the terms:
81 = -19 + x + 4x

Combine like terms: x + 4x = 5x
81 = -19 + 5x

Solving
81 = -19 + 5x

Solving for variable 'x'.

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

Add '-5x' to each side of the equation.
81 + -5x = -19 + 5x + -5x

Combine like terms: 5x + -5x = 0
81 + -5x = -19 + 0
81 + -5x = -19

Add '-81' to each side of the equation.
81 + -81 + -5x = -19 + -81

Combine like terms: 81 + -81 = 0
0 + -5x = -19 + -81
-5x = -19 + -81

Combine like terms: -19 + -81 = -100
-5x = -100

Divide each side by '-5'.
x = 20

Simplifying
x = 20

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