Log3(7-2х)=log3(1-2х)+1
Log3(7-2х)=log3(1-2х)+log3^3 1Log3(7-2х)=log3(1-2х)+log3 1^3 Log3(7-2х)=log3((1-2х)*1) Log3(7-2х)=log3(1-2х) 7-2x=1-2x ; -2x+2x=1-7; x=-6