Question

Suma a doua numere este 14.Daca impartim suma lor la diferenta lor,obtinem catul 3 si restul2.Afla cele doua numere.

Answer 1

a+b=14
(a+b):(a-b)=3 rest 2
Ca sa fie mai usor,notam suma=s;diferenta=d
s:d=3 rest 2
s=3d+2
14=3d+2
14-2=3d
3d=12
d=12:3=4
a+b=14
a-b=4
s:d=14:4=3 rest 2

Answer 2

a+b=14
(a+b):(a-b)=3rest2
a+b=3(a-b)+2
14=3(a-b)+2
3(a-b)=14-2=12
a-b=12:3=4
a+b=14
a-b=4
le adunam:
2a=18
a=18:2=9
b=14-9=5

sau:
a=14-b
14-b-b=4
14-4=b+b
10=2b
b=10:2=5
a=14-5=9