Question

1. cacule o valor das expressoes:

a)440-[8+6(19-12)]

b)2{4[7+4(.3-9)]-3(40-8)}

Answer 1

a) 440-[8+6(19-12)] - - - 440-[8+6(7)] - - - - - 440-[8+42] - - - - 440-[50] - - - - 390

b) 2{4[7+4(3-9)]-3(40-8)} - - - - 2{4[7+4(-6)]-3(32)} - - - - 2{4[7-24]-96} - - - 
2{4[-17]-96} - - - - 2{-68-96} - - - - 2{-164} - - -     -328