Question

4+{2+[3-(7-1)]+2} =

Answer 1

4+{2+[3-(6)]+2}
  4+{2+[-3]+2}
  4+{2-3+2} 
  4+{-1+2}
4+{1}
4+1
  5

Answer 2

→ Cálculo :

⇔ Resposta : 5

4 + { 2 + [ 3 - ( 7 - 1 ) ] + 2 }

4 + { 2 + [ 3 - 6 ] + 2 }

4 + { 2 + [ - 3 ] + 2 }

4 + { 2 - 3 + 2 }

4 + 1

5