Question

101 calcule o valor das expressões a) (-3).(-8) +(+2).(-6)
b) (-2).(-(-7​

Answer 1

$( - 3) \times ( - 8) + (2) \times ( - 6) \\ 16 + ( - 12) \\ 16 - 12 \\ 4$

$( - 2) \times ( - ( - 7) \\ ( - 2) \times ( - 7) \\ 14$