9+x+2x=30

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Solution for 9+x+2x=30 equation:


9+x+2x=30

We simplify the equation to the form, which is simple to understand 
9+x+2x=30

We move all terms containing x to the left and all other terms to the right. 
+1x+2x=+30-9

We simplify left and right side of the equation. 
+3x=+21

We divide both sides of the equation by 3 to get x. 
x=7

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