Question

3125^x *5^9/625 = 125

Answer 1

$( {3125}^{x } \times {5}^{9}) \div 625 = 125 \\ {(5 {}^{6}) }^{x} \times {5}^{9} \div {5}^{5} = {5}^{3} \\ {5}^{6x + 9} = {5}^{3 + 5 }$
Now 6x+9=8
6x= - 1
x= - 1/6