[tex]answer = 5 \\ solution \\ 7 + ( - 2) \\ = 7 - 2 \\ = 5 \\ you \: have \: to \: remember \: these \: rules \\ ( + ) \times ( + ) = ( + ) \\ ( - ) \times ( - ) = ( + ) \\ ( + ) \times ( - ) = ( - ) \\ ( - ) \times ( + ) = ( - ) \\ hope \: it \: helps \\ good \: luck \: on \: your \: assignment[/tex]
