add the following expretionx-z+xyz, z-y-x, xyz-z, x+y+z+xyz
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Step-by-step explanation:
(x-z+xyz) + ( z - y - x) + ( xyz - z ) + ( x + y + z + xyz )
x - z + xyz + z - y - x + xyz - z + x+ y + z + x y z
2x - x + y - y + 2z - 2z + 3xyz
x + 3xyz
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