0580/11 May/Jun 2026, Question 23: Simultaneous Equations by Elimination
Cambridge IGCSE Mathematics 0580 · Paper 11 (Core) · Non-calculator · 4 marks
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The question, in short
Solve the pair of simultaneous equations 3x + 4y = 1 and 2x − 3y = 12 for x and y.
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Solution · 4 marks
- 1×3: 9x + 12y = 3; ×4: 8x − 12y = 48
- 2Add: 17x = 51, so x = 3
- 33(3) + 4y = 1, so 4y = −8
- 4y = −2
Answerx = 3, y = −2
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Also searched as: 0580/11/M/J/26 · 0580_s26_qp_11 · 0580 s26 11 · question 23.
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