Question

d) (-9). (+6) - (+2).(-27) =
e) 19-(-4).(+5) =
f) 7.(-3) -9.(-6) + 11.(-2) =
g) (+ 5).(+ 11) - 37 - (-2).(+14) =
h) 18 - 3.(-7) +9.(-4) - 20 =​

Answer 1

Olá!!!  :)

$\sf ITEM \ (D): \\\\ (-9) \ . \ (+6) \ - \ (+2) \ . \ (-27) \ \ \Rightarrow \ \ (-54) - (-54) \ \ \Rightarrow \ \ -54 + 54 \ \ = \ \ 0 \\\\\\\\ ITEM \ (E): \\\\ 19 - (-4) \ . \ (+5) \ \ \Rightarrow \ \ 19 - (-20) \ \ \Rightarrow \ \ 19 + 20 \ \ \ \ \Rightarrow \ \ 39 \\\\\\\\ ITEM \ (F) : \\\\ 7 \ . \ (-3) - 9 \ . \ (-6) \ + \ 11 \ . \ (-2) \ \ \Rightarrow \ \ (-21) - (-54) + (-22) \ \ \Rightarrow \ \ 11$

$ITEM \ (G): \\\\ (+5) \ . \ (+11) \ - \ 37 \ - \ (-2) \ . \ (+14) \ \ \Rightarrow \ \ 55 \ - \ 37 \ - \ (-28) \ \ \Rightarrow \ \ 46 \\\\ \\\\ ITEM \ (H): \\\\ 18 - 3 \ . \ (-7) \ + \ 9 \ . \ (-4) \ - \ 20 \\\\ 18 - (-21) + (-36) - 20 \ \ \Rightarrow \ \ 18 + 21 - 36 - 20 \ \ \Rightarrow \ \ -17$

Espero ter ajudado, bons estudos!!  :)