0580/13 Oct/Nov 2021, Question 7: Substitution
Cambridge IGCSE Mathematics 0580 · Paper 13 (Core) · Calculator · 2 marks
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The question, in short
Given r = 2t + 3u, find t when r = 18 and u = 4.
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Solution · 2 marks
- 118 = 2t + 3 × 4
- 218 = 2t + 12, so 2t = 6
- 3t = 3
Answer3
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Also searched as: 0580/13/O/N/21 · 0580_w21_qp_13 · 0580 w21 13 · question 7.
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