2u-4=42

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Solution for 2u-4=42 equation: 


Simplifying
2u + -4 = 42

Reorder the terms:
-4 + 2u = 42

Solving
-4 + 2u = 42

Solving for variable 'u'.

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

Add '4' to each side of the equation.
-4 + 4 + 2u = 42 + 4

Combine like terms: -4 + 4 = 0
0 + 2u = 42 + 4
2u = 42 + 4

Combine like terms: 42 + 4 = 46
2u = 46

Divide each side by '2'.
u = 23

Simplifying
u = 23

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