Mathematics for IGCSE & O level - Algebraic Manipulation (Section 4 - No. 28)

Simplify: 5a + 3b - 2a + b

7a + 4b

3a + 4b

7a + 2b

3a + 2b

解释

Combining like terms gives 5a - 2a + 3b + b = 3a + 4b

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