Question

Ma poate ajuta cineva?​

Answer 1

Răspuns:

2x+y=5

z-3t=4

-2z+t=1

x-y=3

x=3+y

2(3+y)+y=5

6+2y+y=5

3y=-1

y=-1/3

x+1/3=3

x=3+1/3=9/3-1/3=8/3

t=1+2z

z-3+6z=4

7z=7

z=1

z-3t=4

1-3t=4

-3t=3

t=-1