what be added to xy-3yz+4zx to get 4xy-3zx+4yz+7
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Hence, 3xy−7zx+7yz+7 should be added to get the required result.
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Answer:
by subtracting xy-3yz+4zx from 4xy-3zx+4yz+7 , we get the required expression
Step-by-step explanation:
therefore we require = (4xy-3zy +4yz+7) -(xy -3yz +4zx )
4xy-3zy+4yz+7-xy-3yz+4zx
4xy-xy-3zx-4zx+4yz+3yz +7
3xy -7zx+ 7yz +7
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