Question

Solve x + y = 6
y + z = 0
x + y – z = 4

Answer 1

the first equation gives you (x+y)

put that into the 3rd equation to solve for z

put z into the the second to solve for y

then x is evident

Answer 2

y=6-x
Putting it into the third equation you get x+6-x-z=4
So z=-2
Putting z into the second equatio we get y+(-2)=O
Therefore y=2
So now you can put it into the first equation x+2=6
X=?

Answer 3

@taramgrant0543664
I think you have made a mistake in the first derivation of z (check the sign)

Answer 4

Ya z should be positive two I forgot the (-) on the z itself lol