Răspunsuri

2014-11-19T14:35:33+02:00
7a+3b+85;a=2b
7*2b+3b+85=17*b+85
7a+3b=85
14b+3b=85 17b=85 b=5
a=10
asa e ok doar iti ziceam ca ceva lipseste in enunt