subtract 3xy 5yz-7zx from 9 xy - 2yz - 6zx
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Answer:
9xy -2yz-6zx - (3xy-5yz-7zx)
» 9xy - 2yz - 6zx - 3xy +5yz+7zx
» 9xy-3xy-2yz+5yz-6zx+7zx
» 6xy+3yz+zx
it is your ans bro...
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