0580/11 May/Jun 2025, Question 26: 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 2x + 5y = 5 and 3x + 4y = 11 for x and y.
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Solution · 4 marks
- 1× 3: 6x + 15y = 15
- 2× 2: 6x + 8y = 22
- 3Subtract: 7y = −7, so y = −1
- 42x + 5(−1) = 5, 2x = 10
- 5x = 5, y = −1
Answerx = 5, y = −1
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Also searched as: 0580/11/M/J/25 · 0580_s25_qp_11 · 0580 s25 11 · question 26.
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