Răspunsuri

2014-10-15T10:23:45+03:00
6(ab+4)=7(ab-9)
6ab+24=7ab-63
24+63=7ab-6ab
87=ab
87=3*29=> a=3, b=29 sau 
a=29. b=3
sau 

a=1, b=87
a=87, b=1
3 4 3