Question

a)4.(10+20+15+30)

b) (10.6+12.4+5.8)-40

c)[6.(3.4-2.5)-4]+3.(4-2)-(10:2)

d)67+{50.[70:(27+8)+18:2]+21}

calcule o valor das expressoes

a) (12+2.5)-8

b) 25-(15+6:3)

c) 25+[7+(8-4:2)]

d)60-[8+(10-2):2]

e)80-[22+(5.2-1)+6]

ajuda pfv​

Answer 1

Explicação passo-a-passo:

a)4.(10+20+15+30)=

  4. 75 =

  300

b) (10.6+12.4+5.8)-40 =

   60 + 48 +40 -40=

   108

c)[6.(3.4-2.5)-4]+3.(4-2)-(10:2)=

 [6. 2 -4] +3. 2 -5 =

8 +6 -5=

9

d)67+{50.[70:(27+8)+18:2]+21} =

 67+ {50. [70:35 +9] +21}=

 67+ {50. 11 +21}=

 67+ 571=

 638

   -------------------------------//-------------------//--------------------------------

a) (12+2.5)-8

    24.5 -8

    112

b) 25-(15+6:3)

   25-17

   8

c) 25+[7+(8-4:2)]=

   25+ [ 7+ 6]=

  25 +13=

  38

d)60-[8+(10-2):2] =

  60-[8+8:2]=

 60 -12=

 48

e)80-[22+(5.2-1)+6] =

 80-[ 22 +9 +6]=

 80- 37=

43

Espero ter ajudado, bons estudos  :))