Question

1)rezolvati prin metoda reducerii urmatoarele sisteme:
a)x + 2y = 2
x - y = -4
b)x - y = 4
x + 2y = 1
c)x + 2y =8
x-y= -1
d)2x-y=9
x+2y=2
e)3x-y=12
x-y=2
2)rezolvati prin metoda reducerii urmatoarele sisteme:
a)2x-3y=7
4x+4y=4
b)2x+4y=2
4x+6y=0
c)4x-3y=20
5x+2y=2
d)6x-2y= -14
7x+y=-13
e)2x+y=-2
3x+2y=-1
3)rezolvati prin metoda reducerii urmatoarele sisteme:
a)2x+3(y+1)=8
5(x+y)-y=2
b)5x+3(y-1)=7
7(x+1)+2y=10
c)2(x+1)+3y=7
3x+2(y-5)=-10
d)3x-2(y+4)=8
4(x+1)+5y=10

Answer 1

ti-am lasat tie c si d... :)))