0580/12 May/Jun 2025, Question 24: Simultaneous Equations by Elimination
Cambridge IGCSE Mathematics 0580 · Paper 12 (Core) · Non-calculator · 3 marks
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The question, in short
Solve the pair of simultaneous equations 5x + 2y = 3 and 3x + 4y = 27, finding values of x and y.
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Solution · 3 marks
- 1× 2: 10x + 4y = 6
- 2Subtract 3x + 4y = 27: 7x = −21, so x = −3
- 35(−3) + 2y = 3, 2y = 18
- 4x = −3, y = 9
Answerx = −3, y = 9
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Also searched as: 0580/12/M/J/25 · 0580_s25_qp_12 · 0580 s25 12 · question 24.
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