Question 111759
The given function is:

f(x) = {{{5/(2x + 10)}}} 


Let y = f(x) = {{{5/(2x + 10)}}}  


Therefore, y = {{{5/(2x + 10)}}}  


lets write the equaition for x in terms of y

2x + 10 = {{{5/y}}} 


2x = {{{(5/y) - 10 }}} 


x = {{{ (5/2y) - 5 }}} 


thus replace x by y and y by x


hence we get: 


y = {{{ (5/2x) - 5 }}} 


this is the solution