👉 Learn how to solve rational equations. A rational expression is an expression in the form of a fraction where the numerator and/or the denominator are/is an algebraic expression. There are many ...

👉Learn how to solve a system of equations by substitution. To solve a system of equations means to obtain a common values of the variables that makes each of the equations in the system true. To ...

Mr and Mrs Smith take their two children to the cinema. The total cost is £33. Mr Jones takes his three children to the cinema and the total cost is £27.50. Calculate the price of a child's ticket and ...