9x+-2x=42

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Solution for 9x+-2x=42 equation: 


Simplifying
9x + -2x = 42

Combine like terms: 9x + -2x = 7x
7x = 42

Solving
7x = 42

Solving for variable 'x'.

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

Divide each side by '7'.
x = 6

Simplifying
x = 6

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