Răspunsuri

2014-08-04T12:07:17+03:00
A=pixuri
b=penare
3a+4b=34
2a+6b=46
---------------(le adunam)
5a+10b=80|:5
a+2b=16

3a+4b=34
a+2b=16
--------------(le scadem)
2a+2b=18|:2
a+b=9

a+2b=16
a+b=9
---------------------(le scadem)
b=7lei
=>a=9-7=2lei