3x=42-3x

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Solution for 3x=42-3x equation: 


Simplifying
3x = 42 + -3x

Solving
3x = 42 + -3x

Solving for variable 'x'.

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

Add '3x' to each side of the equation.
3x + 3x = 42 + -3x + 3x

Combine like terms: 3x + 3x = 6x
6x = 42 + -3x + 3x

Combine like terms: -3x + 3x = 0
6x = 42 + 0
6x = 42

Divide each side by '6'.
x = 7

Simplifying
x = 7

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