2[X-1]=8

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Solution for 2[X-1]=8 equation: 


Simplifying
2[X + -1] = 8

Reorder the terms:
2[-1 + X] = 8
[-1 * 2 + X * 2] = 8
[-2 + 2X] = 8

Solving
-2 + 2X = 8

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 = 8 + 2

Combine like terms: -2 + 2 = 0
0 + 2X = 8 + 2
2X = 8 + 2

Combine like terms: 8 + 2 = 10
2X = 10

Divide each side by '2'.
X = 5

Simplifying
X = 5

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