A19a – Solving two linear simultaneous equations algebraically by elimination

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A starting point: apples and oranges

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Skill isolation: Manipulating equations

Part 1 – Solving a pair of linear simultaneous equations by elimination (easy)

Part 1 contains easy examples where one variable either has the same coefficient in the two equations, or it has the same coefficient with the opposite sign.

Teacher resources for Part 1

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  • Slides in PPTX (with click-to-reveal answers)
  • Slides in PDF (one slide per page, suitable for importing into IWB software)

Links to past exam questions

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Part 2 – Solving a pair of simultaneous equations by elimination (hard)

Part 2 contains harder examples where students need to multiply one or both equations by suitable integers before they can eliminate a variable.

Teacher resources for Part 2

Teachers: log in to access the following:

  • Slides in PPTX (with click-to-reveal answers)
  • Slides in PDF (one slide per page, suitable for importing into IWB software)

Links to past exam questions

Teachers: log in to access these.