31=8x-9

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Solution for 31=8x-9 equation:


31=8x-9

We simplify the equation to the form, which is simple to understand 
31=8x-9

We move all terms containing x to the left and all other terms to the right. 
-8x=-9-31

We simplify left and right side of the equation. 
-8x=-40

We divide both sides of the equation by -08 to get x. 
x=5

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