0580/12 Feb/Mar 2023, Question 23: Simultaneous Equations by Elimination
Cambridge IGCSE Mathematics 0580 · Paper 12 (Core) · Calculator · 3 marks
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The question, in short
Solve the simultaneous equations 3x − 2y = 19 and x + y = 3, showing all working.
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Solution · 3 marks
- 1x + y = 3, so 2x + 2y = 6
- 2Add to 3x − 2y = 19: 5x = 25, x = 5
- 35 + y = 3, y = −2
- 4x = 5, y = −2
Answerx = 5, y = −2
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Also searched as: 0580/12/F/M/23 · 0580_m23_qp_12 · 0580 m23 12 · question 23.
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