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It's important to stick to the rules of algebra when transposing equations.

To keep a formula in balance, always perform the same operation to both sides of the equation.

**Study and practice**

- Read about solving literal equationsThis page from purplemath.com gives many examples showing how to solve an equation for a variable.
- Study transposition of equations, also called isolating a variableOnlinemathlearning.com has put together a page showing two methods for solving for a variable. The page also includes an excellent video.
- Study how to change the subject of a formulaRead several examples of formula transposition at BBC's bitesize maths, and try a few of your own.