Question

como resolver as expressoes ? A) 2.(2+5.3)-17 B) 3+5[2+(3.8)-17} C) 4+2-1+10-25 D) {3.8{2+3-(5.2)-18}}

Answer 1

Resposta:

A)17  B)-17  C) -10 D)-552

Explicação passo-a-passo:

A)2.(2+5.3)-17=

2.(2+15)-17=

2.(17)-17=

34-17=17

B)3+5[2+(3+8)-17]=

3+5[2+11-17]=

OBS.:+11-17= -6

3+5[2+(-6)]=

3+5[-4]=

3-20=

-17

C)4+2-1+10-25=

+16-26=-10

D){3.8{2+3-(5.2)-18}}=

{3.8{2+3-10-18}}=

{3.8{5-28}}=

{3.8{-23}}=

(24).(-23)= - 552

1

 24

X23

---------

+  72

48

---------

 552