Răspuns:
36/24 + 25/20 + 19/4
simplificam fractiile
36/24 + 25/20 +19/4 =
= 3/2 + 5/4 + 19/4 =
= 6/4 + 5/4 + 19/4
= (6+5+19)/4 =
= 30/4 = 7,5
2) 21/13 + 42/26 + 15/39
observam ca doar fractia din mijloc merge simplificata si ne uitam la numitor
13, 26, 39 (toti multiplii de 13, deci amplificam fractiile)
=> 21/13 + 42/26 + 15/39 =
= 21/13 + 21/13 + 15/39
= 63/39 + 63/13 + 15/39=
= (63+63+15)/39=
=141/39
Sper sa fie in regula si clar!
