At the school library counter, the total number of books logged after a Primary 6 visit is written as $6x + 4 + 3x - 1$, where $x$ is the number of pupils. Simplify this expression by combining like terms.
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Worked Solution
Step 1: Group the like terms together: (6x + 3x) + (4 - 1).\n
Step 2: Combine the x terms: 6x + 3x = 9x.\n
Step 3: Combine the constants: 4 - 1 = 3.\n
Step 4: Write the simplified expression: 9x + 3.
Answer: 9x + 3
Correct answer: 9x + 3
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