The last equation means y = z so use it
x + z = 18
y + z = 18
-------------
x - y = 0
so
x = y
so
x = y = z = 9
Solve the system, if possible. (If the system is inconsistent, enter INCONSISTENT. If the system is dependent, enter a general solution in terms of x, y, or z.)
x + y = 18
y + z = 18
x − z = 0
9 answers
the answer didn't work...
i think you used the wrong one for the third line...
x+z=18
y+z=18
x-z=0
x+z=18
y+z=18
x-z=0
9+9 = 18
9+9 = 18
9-9 = 0
That worked
However it is trivial
9+9 = 18
9-9 = 0
That worked
However it is trivial
yes, x - z = 0
also x - y = 0
in fact x y and z are all 9
also x - y = 0
in fact x y and z are all 9
its saying its wrong? :/
By the way, the system is indeterminant. The determinant of the coefficient matrix is zero.
Well, if you are given choices say inconsistent. I used logic and not linear algebra to say 9,9,9
i have no clue why its not working...
i tried:
0,0,0
9,9,9
INCONSISTENT
i tried:
0,0,0
9,9,9
INCONSISTENT