Question

Suma a doua numere este 36.. iar catul lor este 6.. Aflati cele 2 numere..
( Stie cineva? eu nu am reusit )

Answer 1

a + b = 36
a : b = 6
a = 6b
inlocuim pe a in prima ecuatie
6b + b = 36
7b = 36
b = 36/7 = 5,142857
a = 6 * 36/7
a = 216/7 = 30,85714

Answer 2

a;b→ numere
a+b=36
a:b=6→a=6b

6b+b=36
7b=36→b=$\dfrac{36}{7}$

a=6·$\dfrac{36}{7}$=$\dfrac{216}{7}$

Proba:

$\dfrac{216}{7}$+$\dfrac{36}{7}$=$\dfrac{252}{7}$=36

$\dfrac{216}{7}$:$\dfrac{36}{7}$=$\dfrac{216}{7}$·$\dfrac{7}{36}$=6