2x-1=42

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Solution for 2x-1=42 equation: 


Simplifying
2x + -1 = 42

Reorder the terms:
-1 + 2x = 42

Solving
-1 + 2x = 42

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 = 42 + 1

Combine like terms: -1 + 1 = 0
0 + 2x = 42 + 1
2x = 42 + 1

Combine like terms: 42 + 1 = 43
2x = 43

Divide each side by '2'.
x = 21.5

Simplifying
x = 21.5

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