An algebraic equation contains one or more letters in it. Each letter in the equation is called a variable. A variable can change in value. We guess at different values for each letter until our ...

Simultaneous equations are two linear equations that can be solved using bar models. By remembering that the same letter will always have the same value we can work out the missing values. To solve ...

The chancellor is to trim tax breaks on salary sacrifice schemes that allow workers to make pension contributions without paying national insurance, reports suggest. Read this and stick with us as ...