Răspuns :
Notam "x" necunoscuta.
(x*10+56):6=16
x*10+56=16*6
x*10+56=96
x*10=96-56
x*10=40
x=40:10
x=4
Succes!
(x*10+56):6=16
x*10+56=16*6
x*10+56=96
x*10=96-56
x*10=40
x=40:10
x=4
Succes!
(X×10+56):6=16 ; X×10+56= 16×6 (96);
X×10= 96-56 (40); X=40:10; X=4