X + Y = 2Z and Z + W = 2X: which relation follows

1. A.
   $X + Z = Y + W$
2. B.
   $X + Z = 2W$
3. C.
   $X + W = Y + Z$
4. D.
   $X + Z = 2Y$

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1. A.
   P + R = Q + S
2. B.
   P + R = 2S
3. C.
   P + S = Q + R
4. D.
   P + R = 2Q

Tap an option to check your answer.