To find x by itself you first need to do the inverse of division which is multiplication. You would need to do 11/7 times 7/11 on the left of the equals sign which will leave the x by itself. Then you multiply 9/11 by 11/7 and you end up with 99/77 and simplified that is 1 and 22/77 which can be simplified even further to 1 and 2/7 and that means that x= 1 and 2/7
