Question

Efectuați
1+{2+[3x(4+5)-6+7x8]-9}
Repede va rog dau coroana ​

Answer 1

Răspuns:

$1+[2+(3*(4+5)-6+7*8)-9] =\\1+[2+(3*9-6+56)-9] =\\1+[2(27-6+56)-9] =\\1+(2+77-9) =\\1+70 =\\71$