GCSE · Formulae & rearranging

Changing the subject when it appears twiceExam-style questions

Why a subject that appears twice must be collected and FACTORISED out, how clearing a fraction first exposes both copies, and the four-step routine that untangles any of these.

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11 questions · GCSE (Higher) level · mark scheme and worked solution on each · no sign-up to try

DifficultyAllLevel 3Level 4Level 5
  1. 1
    Make xx the subject of 5x−3=y(x+4)5x - 3 = y(x + 4) (3 marks)
    Level 3 · 3 marksTry it