81=5x*5

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Solution for 81=5x*5 equation:


Simplifying
81 = 5x * 5

Reorder the terms for easier multiplication:
81 = 5 * 5x

Multiply 5 * 5
81 = 25x

Solving
81 = 25x

Solving for variable 'x'.

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

Add '-25x' to each side of the equation.
81 + -25x = 25x + -25x

Combine like terms: 25x + -25x = 0
81 + -25x = 0

Add '-81' to each side of the equation.
81 + -81 + -25x = 0 + -81

Combine like terms: 81 + -81 = 0
0 + -25x = 0 + -81
-25x = 0 + -81

Combine like terms: 0 + -81 = -81
-25x = -81

Divide each side by '-25'.
x = 3.24

Simplifying
x = 3.24

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