81-2x=4x+15

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Solution for 81-2x=4x+15 equation:


Simplifying
81 + -2x = 4x + 15

Reorder the terms:
81 + -2x = 15 + 4x

Solving
81 + -2x = 15 + 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 + -2x + -4x = 15 + 4x + -4x

Combine like terms: -2x + -4x = -6x
81 + -6x = 15 + 4x + -4x

Combine like terms: 4x + -4x = 0
81 + -6x = 15 + 0
81 + -6x = 15

Add '-81' to each side of the equation.
81 + -81 + -6x = 15 + -81

Combine like terms: 81 + -81 = 0
0 + -6x = 15 + -81
-6x = 15 + -81

Combine like terms: 15 + -81 = -66
-6x = -66

Divide each side by '-6'.
x = 11

Simplifying
x = 11

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