Question

(32+25)+{42+[17+(28+12)]+4} com a conta pfrr

Answer 1

(32+25)+{42+[17+(28+12)]+4}
    57+{42+[17+ 40]+4}
        57+{42+57+4}
            57+103=
               160

Answer 2

segue o exemplo

(32+25) + {42+[17+(28+12)]+4}
57 + {42 + [17 + 40] +4}
57 + {42 + 57 + 4}
57 + 103 = 160