Mathematics for IGCSE & O level - Algebraic Manipulation (Section 1 - No. 41)

Simplify: 7x - 3y + 2x + 4y

9x + y

5x - y

9x - y

5x + y

Giải thích

Combining like terms, 7x + 2x - 3y + 4y = 9x + y

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