Make t t\,t the subject of the formula r=1−tt+4\displaystyle r = \frac{1-t}{t+4}r=t+41−t
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Rearranging Harder Formulae Questions
52 exam-style questions on Edexcel GCSE Maths Rearranging Harder Formulae. Each one has a worked solution and a mark scheme showing where the marks go.