Rezolvati in CEA mai usoara metoda

Rezolvati In CEA Mai Usoara Metoda class=

Răspuns :

a=1\5+3\7+1\7+4\5+3\7

a=1\5+4\5+3\7+1\7+3\7

a=5\5+7\7

a=1+1

a=2

b=3\10-2\9+7\10-7\9

b=3\10+7\10-2\9+7\9

b=10\10-9\9

b=1-1

b=0

axb=2x0

axb=0

SUCCES!



aducem la acelasi numitor

7/35+15/35+5/35+28/35+15/35=70/35=2

27/90-20/90+63/90-70/90=180/90=2

a*b=2*2=4.