Subtract 3 xy + 5yz-7zx from
5xy – 2yz + 10 xyz
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2xy-7yz+7zx+10xyz
Step-by-step explanation:
5xy-2yz+10xyz-(3xy+5yz-7zx)
=5xy-2yz+10xyz-3xy-5yz+7zx
=5xy-3xy-2yz-5yz+7zx+10xyz
=2xy-7yz+7zx+10xyz
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