Question

Resolva as expressões numéricas: a) 15-(3-2)+(7-4)= b) 18-[2+(7-3-8)-10]= c) 25-(8-5+3)-(12-5-8)= d) -4+[-3+(-5+9-2)]=

Answer 1

Resposta:

a) 15-(3-2)+(7-4)= 11

b) 18-[2+(7-3-8)-10]= 30

c) 25-(8-5+3)-(12-5-8)= 20

d) -4+[-3+(-5+9-2)]= -4

Explicação passo-a-passo:

a) 15-(3-2)+(7-4)=

    15 - 1 + 3 =

      15 - 4 =

        R: 11

b) 18-[2+(7-3-8)-10]=

     18 - [2+ ( - 4 )-10]=

       18 - [- 12] =

          R:30

c) 25-(8-5+3)-(12-5-8)=

    25 - 6 - ( - 1 ) =

       19 - ( - 1 ) =

           R: 20

d) -4+[-3+(-5+9-2)]=

     -4+[-3+2] =

           R: -4