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How to solve difficult simultaneous equations – grade 7+ GCSE maths

April 21, 2020 by Simon Deacon Leave a Comment

This video is about how to solve difficult simultaneous equations, and is around grade 7+  …. these questions can be quite challenging.

Solve

3y = 5 – 2x

y² = xy +5

 

Top Tips!

  • This type of question is usually solved by substitution – making everything ‘x’ or ‘y’
  • Once you’ve got an equation it’ll need solving
  • Sometimes it involves using fractions …
  • Always work down the page
  • Put the equals sign in the middle
  • Show any calculations on one side of the paper
  • Is your answer reasonable? If not, go back and check, if you have time ….
  • If you have run out of time, show your working, and you might get awarded some marks

 

These types of questions appear in all the main examination boards, including Edexcel, AQA and OCR. They are popular and, once you have the basic principles, fairly similar.

If you would like to find out more try these:

Solving simultaneous equations by substitution – circles & straight line question

How to solve difficult simultaneous equations – grade 7+ GCSE maths

How to solve simultaneous linear equations … using algebra

Please do leave a comment below if you are not sure. Alternately you can view my YouTube channel and leave a comment there – I’ll always try to respond as quickly as possible.

Watch this video on YouTube

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