6x+9-4x=21

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Solution for 6x+9-4x=21 equation:


6x+9-4x=21

We simplify the equation to the form, which is simple to understand 
6x+9-4x=21

We move all terms containing x to the left and all other terms to the right. 
+6x-4x=+21-9

We simplify left and right side of the equation. 
+2x=+12

We divide both sides of the equation by 2 to get x. 
x=6

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