(c+16)÷27+48-(256-27×9)=40
(c+16)÷27+48-(256-243)=40
(c+16)÷27+48-13=40
(c+16)÷27+48=40+13
(c+16)÷27+48=53
(c+16)÷27=53-48
(c+16)÷27=5
c+16=27×5
c+16=135
c=135-16
c=119
verificare:
119+16=135