Changing the Subject where it appears Twice GCSE Maths Higher revision Exam paper practice & help

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Edexcel GCSE Maths Linear Higher Tier June 2011 Paper 1 Question 23
Changing the Subject of a formula where the subject appears twice, GCSE Maths Higher & Foundation revision Exam paper practice & help.
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life saver, this helped me on MSc Accounting and Finance. Was trying to rearange the CAPM formula to make risk free rate the subject. Finally figured it out.

undercover_secret_agent
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cant you simplify k=(2t)/(t-1) further into k=(t)/(-1)?

croxxx
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This is so confusing.. Maths is so confusing

iamPrincessBayya