4024/11 May/Jun 2024, Question 14: Simultaneous Equations by Elimination
Cambridge O Level Mathematics 4024 · Paper 11 (Non-calculator) · Non-calculator · 3 marks
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The question, in short
Solve the simultaneous equations 2x + 3y = 7 and x − 6y = 6, showing all working.
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Solution · 3 marks
- 1From x − 6y = 6: x = 6 + 6y
- 22(6 + 6y) + 3y = 7
- 312 + 15y = 7, so 15y = −5, y = −1/3
- 4x = 6 + 6 × (−1/3) = 4
- 5x = 4, y = −1/3
Answerx = 4 and y = −1/3
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Also searched as: 4024/11/M/J/24 · 4024_s24_qp_11 · 4024 s24 11 · question 14.
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