Question

x-y+3=5 4x+2y-z=0 -x+3y+z=5​

Answer 1

Answer:

X=2+y

Y= -1/8

Z=7-2y

Step-by-step explanation:

X-Y+3=5

X-Y=5-3=2

X=2+Y

Put X=2+Y in - X+3Y+Z=5 we get;

-2-Y+3Y+Z=5

2Y+Z=7

Z=7-2Y

Put values of X&Z in equation 4X+2Y-Z=0

4(2+Y)+2Y-(7-2Y)=0

8+4Y+2Y-7+2Y=0

8Y+1=0

8Y=-1

Y=-1/8