Question 913649: x+y=2
y+z=7
z+w=13
x+w=8
Answer by richwmiller(17219)   (Show Source):
You can put this solution on YOUR website! x+y=2,
y+z=7,
z+w=13,
x+w+8
1,1,0,0,2
0,1,1,0,7
0,0,1,1,13
1,0,0,1,8
No solution
x+y=2,
y+z=7,
subtract
x-z=-5
x+w=8
z+w=13,
subtract
x-z=-5
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