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4024/13 May/Jun 2025, Question 4: Substitution

Cambridge O Level Mathematics 4024 · Paper 13 (Non-calculator) · Non-calculator · 2 marks

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The question, in short

Work out the value of 5x + 3y given x = 4 and y = −2.

Summarised in our own words. Use the official paper for the exact wording and any diagrams.

Solution · 2 marks

  1. 15 × 4 + 3 × (−2)
  2. 2= 20 − 6 = 14

Answer14

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Also searched as: 4024/13/M/J/25 · 4024_s25_qp_13 · 4024 s25 13 · question 4.
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