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sqrt(5-x)+2=7

 Jan 6, 2020
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\(\sqrt{5-x}+2=7\) 

subtract 2 from both sides

\(\sqrt{5-x}=5\)  Square both sides 

\(5-x=25\)  Subtract 5

\(-x=20\)  Multiply by -1

\(x=-20\)

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 Jan 6, 2020

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