Răspunsuri

2014-08-09T11:03:25+03:00
A) x+y+z=43-11

x+y+z= 32

b)5z+3x+4y= 59-27

5z+3x+4y=32

c)x -2y =52 -13

x-2y=39

3x-6y+1=  3(x-2y)+1 =3*39+1=  117+1=118
30 4 30