3x+9=4x+12

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Solution for 3x+9=4x+12 equation:


3x+9=4x+12

We simplify the equation to the form, which is simple to understand 
3x+9=4x+12

We move all terms containing x to the left and all other terms to the right. 
+3x-4x=+12-9

We simplify left and right side of the equation. 
-1x=+3

We divide both sides of the equation by -1 to get x. 
x=-3

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