2x+4x=42

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Solution for 2x+4x=42 equation: 


Simplifying
2x + 4x = 42

Combine like terms: 2x + 4x = 6x
6x = 42

Solving
6x = 42

Solving for variable 'x'.

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

Divide each side by '6'.
x = 7

Simplifying
x = 7

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