0580/43 Oct/Nov 2025, Question 17: Rearranging Complex Formulas
Cambridge IGCSE Mathematics 0580 · Paper 43 (Extended) · Calculator · 3 marks
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The question, in short
Rearrange x = 7t/(5 − t) to make t the subject of the formula.
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Solution · 3 marks
- 1x(5 − t) = 7t
- 25x − xt = 7t
- 35x = 7t + xt
- 45x = t(7 + x)
- 5t = 5x/(x + 7)
Answer5x/(x + 7)
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Also searched as: 0580/43/O/N/25 · 0580_w25_qp_43 · 0580 w25 43 · question 17.
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