Question 104326
{{{x/5+4=7}}} both sides multiply by {{{5}}}

{{{(x/5)* 5 + 4*5 = 7*5}}} 

{{{x+ 20 = 35}}}         add {{{-20}}} to both sides

{{{x+ 20 - 20 = 35 -20}}} 


{{{x = 35 - 20}}} 

{{{x = 15}}}