Question

aflati numerele naturale a si b care verifica egalitatea ab+a= 15

Answer 1

a+b+a = ab+a=15
15=a2*b
a2=10
b=5

Answer 2

Ab+a=15
B=(15-a):a
Inlocuim pe b in suma de mai sus.
A(15-a):a+a=15
A(15-1):1+1=15
A*14:1+1=15
A*14+1=15
15a=15 a= 15/15
A=1
B= (15-1):1
B = 14
Ab+a=15
1*14+1=15
14+1=15