## Simultaneous Equations

Cycling Puzzle Solution By Substitution

Simultaneous Equations

Solving linear equations {revision} Solving rational equations- Solving rational equations (part 1)
- Solving rational equations (part 2)
- Solving rational equations (part 3)
Linear inequalities |
Graphs of linear equations Solving simultaneous equations (bicycle problem) |

We will now consider some algebraic methods for solving simultaneous equations.

The method of solution by substitution is used when at least one equation is given with either

The method of solution by substitution is used when at least one equation is given with either

*x*or*y*as the subject of the formula. We substitute an expression for this variable into another equation.