Question

For what value of the variable : is the value of 9-y twice as much as the value of y?

Answer 1

Hi there!  

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I believe your answer is:  

$y = 3$

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Here’s why:  

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$\boxed{\text{"The value of 9-y twice as much as the value of y" can be written as:}}\\\\9-y = 2y$

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$\boxed{\text{Solving for 'y'...}}\\\\9-y=2y\\------------\\\rightarrow 9 -y + y = 2y + y\\\\\rightarrow 9 = 3y\\\\\rightarrow \frac{9=3y}{3}\\\\\rightarrow 3 = y\\\\\rightarrow \boxed{y = 3}$

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Hope this helps you. I apologize if it’s incorrect.  

Answer 2

Y=3 because 9-3=6 and 3*3=6