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Question
Subtract 3xy + 5yz − 7zx from 5xy − 2yz − 2zx + 10xyz.
Solution
The given expressions are in separate rows, with like terms one below the other, and then the subtraction of these expressions is as follows:
5xy – 2yz – 2zx + 10xyz
3xy + 5yz – 7zx
(–) (–) (+)
________________________
2xy – 7yz + 5zx + 10xyz
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