4s + 5 = 19
First, subtract 5 from both sides. / Your problem should look like: 4s = 19 - 5.
Second, simplify 19 - 5 to 14. / Your problem should look like: 4s = 14.
Third, divide both sides by 4. / Your problem should look like: s = 

 . 
Fourth, simplify 

 to 

 . / Your problem should look like: s = 

 which is the answer.