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Mathematics for IGCSE & O level - Algebraic Manipulation (Section 3 - No. 13)

Simplify 7u - 4u + 8v - 2v
3uv
3u + 6v
11u - 6v
3u - 6v

解释

7u - 4u + 8v - 2v = 3u + 6v

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