\( 2^{5 x-4}+3 \cdot 2^{5 x-9}+3 \cdot 5^{5 x-8}=5^{5 x-7}+5 \cdot 2^{5 x-8} \)
\( 2^{5 x-4}+3 \cdot 2^{5 x-9}-5 \cdot 2^{5 x-8}=5^{5 x-7} -3 \cdot 5^{5 x-8}\)
\( 2^{5 x-9}(2^{5}+3 -5 \cdot 2)=(5 -3 )5^{5 x-8} \)
\( 2^{5 x-9}(25)=(2 )5^{5 x-8} \)
\( 2^{5 x-10}=5^{5 x-10} \)
\( 1 =2,5^{5 x-10} \)
Also x=2.