Răspunsuri

  • Utilizator Brainly
2014-08-26T12:37:42+03:00
A*B=375
(A+5)*(B-5)=400
A*B-5*A+5*B-25=400
375-5*A+5*B-25=400
350-5*A+5*B=400
5(B-A)=50
B-A=10
B=20+A
A*(10+A)=375
375=3*5*5*5 ;  3*5+10=5*5=>15*(10+15)=375
=> A=15
B=15+10
B=25