Complete the proofs by filling in the missing statements. will give brainliest. see picture for question.

Determine whether the set of whole numbers is closed under addition. explain why the set is or is not closed. give an example.

Solve the following pair of equations for x and y: ax/b_ by /a= a +b; ax - by = 2ab

Ahousekeeper mixed 5 gallons of blue paint with every 9 gallon of yellow paint in order to make a green paint which ratio of gallon of blue paint to gallon of yellow paint will make the same shade of green paint