3x+x+x+9=x+2x+12

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Solution for 3x+x+x+9=x+2x+12 equation:


3x+x+x+9=x+2x+12

We simplify the equation to the form, which is simple to understand 
3x+x+x+9=x+2x+12

We move all terms containing x to the left and all other terms to the right. 
+3x+1x+1x-1x-2x=+12-9

We simplify left and right side of the equation. 
+2x=+3

We divide both sides of the equation by 2 to get x. 
x=1.5

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