Răspuns :
(7x9)^223 : (7^222 x9^221)=
(7^223 x 9^223 ) : (7^222x 9^221)=
7^223-222 x 9^223-221=
7^1 x 9^2=
7x81=567
(7^223 x 9^223 ) : (7^222x 9^221)=
7^223-222 x 9^223-221=
7^1 x 9^2=
7x81=567