Calculati va rog repede punctul c(4/9+5/9)-4/6=

Răspuns :

=
(4+5)/9-4/6=
9/9-4/6=
1-4/6=
1-2/3=
(3-2)/3=1/3
(4/9+5/9)-4/6 = 

= (4+5)/9 - 4/6 = 

= 9/9 - 4/6 = 

= 1 -  4/6 = 

= 1 - 2 /3 = 

=  (3-2)/3 = 

= 1/3