Question

{[20-(2:4)]x5-[18-(6x5-16)]}=?


5x{2x[3x(240:16)+5}+499=?

{[21:7+3:1)+6]:(7x6:2-15)}=?


Obrigado a quem me ajudar :D

Answer 1

a) {[20-0,5]x5-[18-(30-16)]}
{19,5 x5-[ 18-14]}
{99,5 -4} =95,5

b)5x{2x[3x15+5]}+499
5x{2x[45+5]}+499
5x{2x50}+499
5x 100+499
500+ 499= 999