Question

calcule o valor das expressoes

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

b) 2{43[7+4(5.3-9)]-3(40)}

Answer 1

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

b) 2{43[7+4(5.3-9)]-3(40)} - - - 2{43[7+4(15-9)]-120} - - - 2{43[7+4(6)]-120}
2{43[7+24]-120} - - - 2{43[31]-120} - - - 2{1333-120} - - - - 2{1213} - - - 2.426