2(-1+x)=9

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Solution for 2(-1+x)=9 equation:


Simplifying
2(-1 + x) = 9
(-1 * 2 + x * 2) = 9
(-2 + 2x) = 9

Solving
-2 + 2x = 9

Solving for variable 'x'.

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

Add '2' to each side of the equation.
-2 + 2 + 2x = 9 + 2

Combine like terms: -2 + 2 = 0
0 + 2x = 9 + 2
2x = 9 + 2

Combine like terms: 9 + 2 = 11
2x = 11

Divide each side by '2'.
x = 5.5

Simplifying
x = 5.5

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