Question

Solve for x. thx u.

(4x)^lg5 = (5x)^lg7

Answer 1

is this
\[(4x)^{\ln(5)}=(5x)^{\ln(7)}\]

Answer 2

lg5 = log base10 5

Answer 3

\[(4x)^{\log(5)}=(5x)^{\log(7)}\]
\[4^{\log(5)}x^{\log(5)}=5^{\log(7)}x^{\log(7)}\]

Answer 4

only solution will be x = 0