Răspunsuri

2014-02-11T22:56:26+02:00
A-b=42
2*b+8=a
inlocuiesti in prima relatie si rezulta
2*b+8-b=42 rezulta b+8=42
deci b=34
2*34+8=a rezulta a=76

17 4 17
2014-02-11T23:54:35+02:00
A+b=30
b=4a
a+4a=30
5a=30
a=30:5
a=6
b=4a
b=4x6=24
7 4 7