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7x-10

               =4  

     9

 Oct 26, 2021
 #1
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Hello Guest!

 

\(\sqrt{\frac{7x-10}{9}}=4\ |\ ^2\cdot 9\\ 7x-9=4\cdot 9\ |\ +9\\ 7x=4\cdot 9+9\ |\ :7\\ x=\frac{45}{7}\)

 

\(\dfrac{\sqrt{7x}-10}{9}=4\ |\ \cdot 9\ +10\\ \sqrt{7x}=4\cdot 9+10\ |\ ^2\\ 7x=46^2\ |\ :7\\ x= \frac{2116}{7}=302\ \frac{2}{7}\)

 

Write again what you mean, please.

laugh  !

 Oct 26, 2021
edited by asinus  Oct 26, 2021

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