Example 1. Simplify :
(i) (x + 2y + 3z) + (2x + 3y – 2z)
(ii) (2x + 3y + 4z) – (x – 4y – 3z)

Example 1. Simplify :
(i) (x + 2y + 3z) + (2x + 3y – 2z)
(ii) (2x + 3y + 4z) – (x – 4y – 3z)

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