Espressione (73489)

[ami!]

{15+3x[2x9-15+(5x4-15)x4]-16x4}:5-2+3

Aggiunto 14 minuti più tardi:

Alee mio fratello ti ringrazia xD :D

[ale92t]

{15+3x[2x9-15+(5x4-15)x4]-16x4}:5-2+3

{15+3x[18-15+(20-15)x4]-64}:5-2+3

{15+3x[18-15+(5)x4]-64}:5-2+3

{15+3x[18-15+20]-64}:5-2+3

{15+3x[23]-64}:5-2+3

{15+69-64}:5-2+3

{20}:5-2+3

4-2+3 = 5

:hi

[tiscali]

[math]\left \{15 + 3 \cdot [2 \cdot 9 - 15 + ( 5 \cdot 4 - 15) \cdot 4] - 16 \cdot 4 \right \} : 5 - 2 + 3 =[/math]

[math]\left \{15 + 3 \cdot [18 - 15 + (20 - 15) \cdot 4] - 64 \right \} : 5 - 2 + 3 =[/math]

[math]\left \{15 + 3 \cdot [3 + 5 \cdot 4] - 64 \right \} : 5 - 2 + 3 =[/math]

[math]\left \{15 + 3 \cdot [3 + 20] - 64 \right \} : 5 - 2 + 3 =[/math]

[math]\left \{ 15 + 3 \cdot 23 - 64 \right \} : 5 - 2 + 3 =[/math]

[math]\left \{15 + 69 - 64 \right \}: 5 - 2 + 3 =[/math]

[math]\left \{20 \right \} : 5 - 2 + 3 \to 4 - 2 + 3 = 5[/math]