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frac{21b^x}{nb^3}=7b^9

 Feb 18, 2019
 #1
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+2

21b^x

_____   = 7b^9

n b^3

 

This implies that 

 

21 / n = 7    ⇒        n   = 3

 

And

 

b^x / b^3 = b^9      means that

 

b^x = b^9 * b^3

 

b^x = b^12

 

x = 12

 

 

cool cool cool

 Feb 18, 2019

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