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FoundationNon-calculatorA21 Forming equations

Question 1 · 3 marks

Spec and skills
  • Paper scope: Paper 1: non-calculator practice
  • Spec A21
  • Spec A17
  • Original practice question
  • Answer and supported method checks
Zara thinks of a number. She doubles it and then adds 7. Her answer is 31.
Form an equation and solve it to find Zara's number. You must show your working.