Question

a)-4+[-3+(-5+9-3)]
b)3-{-5-[8-2+(-5+9)]}
c){2+[1+(-15-15)-2]}
d){30+[10-5+(-2-3)]-18+13}
e){[(-50-10)+11+19]+20}+10​

Answer 1

Explicação passo-a-passo:

a) -4 +[-3+(-8+9)]=

-4+[-3+1]=

-4 +[-2]=

-4-2=

-6

b) 3-{-5-[8-2+4]}=

3-{-5-[12-2]}=

3-{-5-10}=

3-{-15}=

3+15=

+18

c) {2+[1+(-30)-2]}=

{2+[1-30-2]}=

{2+[1-32]}=

{2+[-31]}=

{2-31}=

- 29

d) {30+[10-5+(-5)]-18+13}=

{30+[10-5-5]-18+13}=

{30+[10-10]-18+13}=

{30-18+13}=

{43-18}=

25

e) {[-60 +11 +19] +20}+10=

{[-60+30]+20}+10=

{ -30+20} +10=

-10+10=

0