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4MA1/1FR Jan 2020, Question 6: Solving Linear Equations

Pearson Edexcel International GCSE Mathematics A 4MA1 · Paper 1FR (Foundation) · Calculator · 7 marks

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The question, in short

Simplify a product, solve a linear equation, and evaluate two given formulas by substituting the stated values.

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

Part (a) · 1 mark

Simplify the product 3r × 5t.

  1. 13r × 5t = 15rt

Answer15rt

Part (b) · 2 marks

Solve 4x + 5 = 27 for x.

  1. 1Subtract 5 from both sides: 4x = 27 − 5 = 22
  2. 2Divide both sides by 4: x = 22 ÷ 4 = 5.5

Answer5.5

Part (c) · 2 marks

Using P = 7w − 5y, find P when w = 2 and y = 4.

  1. 17 × 2 = 14
  2. 25 × 4 = 20
  3. 314 − 20 = −6

Answer−6

Part (d) · 2 marks

Using Q = 2u² − 5, find Q when u = −3.

  1. 1Square first: (−3)² = 9
  2. 22 × 9 = 18
  3. 318 − 5 = 13

Answer13

Stuck on a step? Read the free lesson: Solving Linear Equations

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