Question

expressao algebrica 30+[-16-(-10+7)+(-+5)]

Answer 1

30+[-16-(-10+7)+(-+5)]
30+[-16-(-3)-5]
30+(-18)=12

Answer 2

30+[-16-(-10+7)+(-+5)]
30+[-16-3+(-5)]
30+[-16-(-3)-5]
30+[-18]
  12