Rearranging Formulas (Edexcel GCSE Maths): Flashcards

The letter that stands alone on one side of the equals sign

Changing a formula so a different letter becomes the subject

Remove square roots by squaring both sides

Remove fractions by multiplying every term by denominator

Multiply out brackets using algebraic rules

Collect subject terms on one side, others on the other

Combine like terms to form $Ax = B$, may need to factorise

Divide both sides by the coefficient $A$

Take square root of both sides, include ± sign

When taking square root at the end (step 7)

Factorise to take out the subject as common factor

Multiply through by denominator early in the process

You can skip steps that don't apply to your problem