Explicație pas cu pas:
[tex]( - 2) \times 4 \times ( - 3) = 24 \\ [/tex]
[tex]( - 5) \times 7 \times ( - 2) = 70[/tex]
[tex]( - 2) \times ( - 7) \times ( - 5) = - 70[/tex]
[tex]8 \times 9 \times ( - 3) = - 216[/tex]
[tex]( - 3) \times 4 \times ( - 6) = 72[/tex]
[tex]( - 5) \times 6 \times ( - 8) = 240[/tex]
...............................
[tex]( - ) \times ( - ) = + \\ ( - ) \times ( + ) = - \\ ( + ) \times ( + ) = + [/tex]