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Add: 7xy + 5yz - 3zx, 4yz + 9zx - 4y, - ...

Add: `7xy + 5yz - 3zx, 4yz + 9zx - 4y, - 3xz + 5x - 2xy`

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To solve the problem of adding the algebraic expressions \(7xy + 5yz - 3zx\), \(4yz + 9zx - 4y\), and \(-3xz + 5x - 2xy\), we will follow these steps: ### Step-by-Step Solution: 1. **Write down the expressions clearly:** We have three expressions to add: \[ (7xy + 5yz - 3zx) + (4yz + 9zx - 4y) + (-3xz + 5x - 2xy) ...
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