2x-1=128

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Solution for 2x-1=128 equation: 


Simplifying
2x + -1 = 128

Reorder the terms:
-1 + 2x = 128

Solving
-1 + 2x = 128

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 = 128 + 1

Combine like terms: -1 + 1 = 0
0 + 2x = 128 + 1
2x = 128 + 1

Combine like terms: 128 + 1 = 129
2x = 129

Divide each side by '2'.
x = 64.5

Simplifying
x = 64.5

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