Question

me ajudem pfvr ...............................






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Answer 1

Resposta:

1.

a)15+[(3.6-2) - (10-6:2)+1] =

  15+[(18-2) - (4:2)+1] =

  15+[(16) - (2)+1] =

  15+[16-2+1] =

  15+[14+1] =

  15+15 =

     30

b) 50+{10-2.[(6+4:2)-(10-3)]} =

  50+{10-2.[(10:2)-7]} =

  50+{10-2.[5-7]} =

  50+{10-2.(-2)} =

  50+{8.(-2)} =

  50+(-16) =

     34

c) 180:{10+2.[20-45:(13-2.5)]} =

   180:{10+2.[20-45:(11.5)]} =

   180:{10+2.[20-45:55]} =

   180:{10+2.[-25:55]} =

   180:{10+2.0,4545} =

   180:{12.0,4545} =

   180:5,454 =

     981,72

   

d)45+[(8.5-10:2)+(18:6-2)] =

  45+[(45-5)+(3-2)] =

  45+[(40+1)] =

  45+[41] =

     86

e)100-3.{5+8:2-[3.(7-6)]} =

   100-3.{5+8:2-[3.1]} =

   100-3.{5+8:2-3} =

   100-3.{5+4-3} =

   100-3.6 =

   100-18 =

      82

Explicação passo a passo: