Question

A+b+c=748
A+b=402
B+c=546
Rezolvare in 2moduri

Answer 1

Modul 1
a+b=402
b+c=546
(le adunam si obtinem) a+2b+c=948
(daca stiam ca a+b+c=748 atunci putem sa inlocuim)b+748=948
=>  b=200
a+b=402
=> a=202
200+c=546
=> 346

Modul 2
a+b+c=742
b+c=546
(inlocuim in prima relatie) a+546=742
=> a=196
196+b=402
=> b=206
206+c=546
=> c=340

Spor la invatat!