x-7+21=3x

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Solution for x-7+21=3x equation:


x-7+21=3x

We simplify the equation to the form, which is simple to understand 
x-7+21=3x

We move all terms containing x to the left and all other terms to the right. 
+1x-3x=+7-21

We simplify left and right side of the equation. 
-2x=-14

We divide both sides of the equation by -2 to get x. 
x=7

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