Add 7xy + 5yz - 3zx ; 4xy - 3yz - 4y / 3 3xz + 5x - 2xy
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Step-by-step explanation:
7xy+4xy-2xy+5yz-3yz-3zx+3zx+5x-4y/3
9xy+2yz+5x-4y/3
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