Question 312413
I'm assuming you mean log base 5:
{{{ log(5,7) + (1/2)log(5,4)= log(5,x) }}}
{{{ log(5,7) + log(5,4^(1/2))= log(5,x) }}}
{{{ log(5,7) + log(5,2)= log(5,x) }}}
{{{ log(5,7*2) = log(5,x) }}}
{{{ log(5,14) = log(5,x) }}}
{{{ 14 = x }}}