what should be added to x y - 3 Yz + 4 zx to get 4 xy - 3zx + 4 Y Z + 7
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Step-by-step explanation:
(4xy-3zx+4yz+7) - (xy-3yz+4zx)
4xy-3zx+4yz+7
-xy -4zx+3yz
=3xy-7zx+7yz+7
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