Răspuns :
Inlocuim valorile:
AB/BC + CD/EF=
8/6+5/7= (aducem la acelasi numitor)
(8*7)/(6*7)+(5*6)/(6*7)=
(56+30)/42=
86/42= (simplificam cu 2)
43/21
AB/EF+DC/AB=
8/7+5/8=
(8*8)/(7*8)+(5*7)/(7*8)=
(64+35)/56=
99/56
Succes!
AB/BC + CD/EF=
8/6+5/7= (aducem la acelasi numitor)
(8*7)/(6*7)+(5*6)/(6*7)=
(56+30)/42=
86/42= (simplificam cu 2)
43/21
AB/EF+DC/AB=
8/7+5/8=
(8*8)/(7*8)+(5*7)/(7*8)=
(64+35)/56=
99/56
Succes!