How do i find two integers whose sum is -6

Can someone me and plz do the problem

The first floor of marcus’ house is 1,440 square feet. he will cover 1,033 square feet with wood and the rest with tile. a box of tiles will cover 11 square feet. how many boxes of tile does marcus need to buy to cover the floor?

Landon wrote that 3−2.6=4. which statement about his answer is true?