Răspunsuri

2014-10-01T19:20:14+03:00
X+y+19= 33 => x+y= 14
3y+ 3x= 3 (x+y)= 3*14= 42
deci 3y+ 27+ 3x= 42+ 27= 69
2014-10-01T19:22:34+03:00