x(2)-1=8

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Solution for x(2)-1=8 equation: 


Simplifying
x(2) + -1 = 8

Reorder the terms for easier multiplication:
2x + -1 = 8

Reorder the terms:
-1 + 2x = 8

Solving
-1 + 2x = 8

Solving for variable 'x'.

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

Add '1' to each side of the equation.
-1 + 1 + 2x = 8 + 1

Combine like terms: -1 + 1 = 0
0 + 2x = 8 + 1
2x = 8 + 1

Combine like terms: 8 + 1 = 9
2x = 9

Divide each side by '2'.
x = 4.5

Simplifying
x = 4.5

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