Răspunsuri

2014-10-07T17:15:25+03:00
X+y=8    x=8-y

y+2*7=35
y+14=35
y=35-14
y=21

x=8-y=8-21=-13



x+y=8 x=8-y

y+2*7=35
y+14=35
y=35-14
y=21

x=8-y=8-21=-13
2014-10-07T17:19:40+03:00
X+y=8    x=8-y

y+2*7=35
y+14=35
y=35-14
y=21

x=8-y=8-21=-13