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Mathematics for IGCSE & O level - Algebraic Manipulation (Section 8 - No. 24)

Simplify: 9x - 2y - 4x + 7y.
5x + 5y
13x - 9y
5x - 5y
13x + 9y

설명

Combine like terms: (9x - 4x) + (-2y + 7y) = 5x + 5y

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