Question 989618
x+y=7
y+z=8
x+2x=2 
solve third equation for x
3x = 2
x = 2/3
solve first equation for y
(2/3) + y = 7
y = 19/3
solve second equation for z
(19/3) + z = 8
z = 5/3
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solution is x = 2/3, y = 19/3, z = 5/3