In these tutorials you are shown how to solve a simultaneous equation by the substitution method. You are also shown how it relates to the intersection of two graphs and why there are two sets of solutions.

Example 1

Example in the video

Solve the simultaneous equations:

  1. x2 + y2 = 5
    x + y = 3

Example 2

Example in the video

Solve the simultaneous equations:

  1. xy – x = -10
    2x + y = 2