Let the Study Guides explain how to solve two equations simultaneously.

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Covers most Maths topics in Secondary High Schools

Created by an experienced maths teacher

Resources used with students studying Maths in Scottish Secondary Schools

Understanding** **Simultaneous Equations** **is important to ensure your success in tests, assessments and exams.

S1 and S2 Maths | HERE |

National 5 Maths | HERE |

Higher Maths | HERE |

Advanced Higher Maths | HERE |

GCSE Maths | HERE |

All Other Courses | HERE |

Exam Ques 1 (GCSE) | Simultaneous Equations |

Exam Ques 2 (GCSE) | Sim Eqns with a Quadratic |

Exam Ques 3 (GCSE) | Solving Sim Eqns Graphically |

Exam Ques 4 (N5) | Simultaneous Equations |

Exam Ques 5 (N5) | Simultaneous Equations |

Exam Ques 6 (N5) | Simultaneous Equations |

Exam Ques 7 (N5) | Simultaneous Equations |

Mind Map 1 | Simultaneous Equations |

Mind Map 2 | Sim Eqns (PowerPoint) |

A Simultaneous Equation exam question is given below where you are asked to “s*olve algebraically the system of equations”.*

* 3x + 2y = 17 *

* 2x + 5y = 4*

Source: N5 Maths, 2015, P1, Q11

To answer the above successfully:

*Multiply both equations to make either the x or y coefficients the same**Subtract the equations to find x or y**Substitute x or y back into one of equations to find the other letter*

They have been around for thousands of years. The most ancient records of the use of simultaneous equations were found in Samaria as far back as 2000 BC.

Simultaneous equations:

*Are two equations with two unknowns**Can be solved graphically, using substitution or by elimination.*

In tests, assessments and exams you are often required to make up two equations from a real life context and then solve.

We cover everything you need to know about Simultaneous Equations in the Study Guides.

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to study Simultaneous Equations

Over 60 Theory Guides on key Maths topics - N5 Exam questions used to aid understanding!

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Step-by-step worked solutions to N5 past exam papers - unavailable elsewhere

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