Edexcel IGCSE Maths 复习笔记 2.11.2 Solving Linear Equations

Solving equations…

… is just like rearranging formula so we’ll use exactly the same method …

• This is a mnemonic (way of remembering something) developed to deal with everything except roots and powers (see Rearranging Formulae – Extra Bits notes for that) and can also be used for rearranging formulae…
1. GROF – Get Rid Of Fractions
2. GROB – Get Rid Of Brackets
3. LET – Lump Everything Together (or Let’s Examine Terms)
4. FIN – Factorise If Necessary
5. D – Divide