Question

57/11+(х - 9/11 ) = 18/11

Answer 1

57/11+(х - 9/11 ) = 18/11   

   х - 9/11  = 18/11- 57/11        

 х - 9/11  =- 39/11      

 х = 9/11 -39/11

   х =-30/11

Answer 2

$frac{57}{11} + (x - frac{9}{11}) = frac{18}{11}$
$frac{57}{11} + x = frac{9}{11} + frac{18}{11}$
$frac{57}{11} + x = frac{27}{11}$
$x = - frac{57}{11} +frac{27}{11}$
$x = - frac{30}{11}$