Question

h)20+{[7+5(-9+7)+3]}= (i)-20{-4-[-8+(+12-6-2)+2+3]}= (j){[(-50-10)+11+19]+20}+10= ajudaaa​

Answer 1

Explicação passo a passo:

h)

20+ {[7 + 5. (-9 + 7) + 3]}

20+ {[7 + 5. (-2) + 3]}

20+ {[7 -10 + 3]}

20+ {-3 + 3}

20

(i)

-20 {- 4 -[- 8 +(12 - 6 - 2) + 2 + 3]}

-20 {- 4 -[- 8 +(6 - 2) + 2 + 3]}

-20 {- 4 -[- 8 + 4 + 2 + 3]}

-20 {- 4 -[-4 + 2 + 3]}

-20 {- 4 -[-2 + 3]}

-20 {- 4 -[1]}

-20 {- 4 -1}

-20 {- 5}

100

(j)

{[(-50 - 10) + 11 + 19]+ 20} + 10

{[(-60+ 11 + 19]+ 20} + 10

{[(-49+ 19]+ 20} + 10

{-30+ 20} + 10

-10 + 10

0