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Mathematics for IGCSE & O level - Algebraic Manipulation (Section 7 - No. 16)

What's the simplified form of 3(x+y) - 2y?
3x + y
3x + 5y
3x - 5y
3x - y

説明

Expanding and simplifying: 3x + 3y - 2y = 3x + y

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