Mathematics for IGCSE & O level - Algebraic Manipulation (Section 6 - No. 3)

Simplify 6x - 4y + 2x + 9y

8x + 5y

8x - 5y

4x + 5y

4x - 5y

解释

Combining like terms: (6x + 2x) + (-4y + 9y) = 8x + 5y

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