You can put this solution on YOUR website! If X - Y = 9 --> x = y + 9
If X + Z = 12
If Z - W = 14
If Y + W = 2
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X + Z = 12 --> y+9 + z = 12 --> y + z = 3
Z - W = 14
Y + W = 2
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y + z = 3
Z - W = 14
Y + W = 2 --> w = -y + 2
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y + z = 3
Z - W = 14
w = -y + 2
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y + z = 3
Z - W = 14 --> z - (-y+2) = 14 --> y + z = 12
w = -y + 2
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y + z = 3 and y + z = 12 --> inconsistent, no solution.
