Jack bought one case of water and four cases of soda from the grocery store and paid $32.95. He went back that day and bought three more cases of water and two more cases of soda and paid $26.35. How much is a case of water ?

Ibelieve the answer would be 7, 13, 23

It's like discovering the answer to a puzzle. the purpose in solving an equation is to find the value or values of the variable that makes it a true statement. any value of the variable that makes the equation true is called a solution to the equation.