\( \begin{array}{l}5^{x}+5^{x}+5^{x}+5^{x}+5^{x}=1 \\ x=?\end{array} \)
\(x=-1\)
Step 1 :\(5^{x}+5^{x}+5^{x}+5^{x}+5^{x}=5^{x+1}\)
Step 2 :\(5^{x+1}=1\)
Step 3 :\(x+1=0\)
Step 4 :\(x=-1\)