9(x-1)=81

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Solution for 9(x-1)=81 equation: 


Simplifying
9(x + -1) = 81

Reorder the terms:
9(-1 + x) = 81
(-1 * 9 + x * 9) = 81
(-9 + 9x) = 81

Solving
-9 + 9x = 81

Solving for variable 'x'.

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

Add '9' to each side of the equation.
-9 + 9 + 9x = 81 + 9

Combine like terms: -9 + 9 = 0
0 + 9x = 81 + 9
9x = 81 + 9

Combine like terms: 81 + 9 = 90
9x = 90

Divide each side by '9'.
x = 10

Simplifying
x = 10

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