4MA1/2H Jun 2025, Question 8: Simultaneous equations
Pearson Edexcel International GCSE Mathematics A 4MA1 · Paper 2H (Higher) · Calculator · 3 marks
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The question, in short
Solve 3x + 5y = 8 and 4x + y = −3.5 using algebra.
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Solution · 3 marks
- 1Multiply 4x + y = −3.5 by 5: 20x + 5y = −17.5
- 2Subtract 3x + 5y = 8: 17x = −25.5
- 3x = −1.5
- 44 × (−1.5) + y = −3.5
- 5y = 2.5
Answerx = −1.5, y = 2.5
Stuck on a step? Read the free lesson: Simultaneous Equations by Elimination
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