There are lots of different ways of remembering what to do when rearranging formulae – every teacher (and student) has their favourite, this is my recommendation....
GROF GROBLET FIND ANSWER
This is a mnemonic (way of remembering something) deals with everything except roots and powers (see the following set of notes for that) and can also be used for solving equations…1.?GROF?– Get Rid Of Fractions2.?GROB?– Get Rid Of Brackets3.?LET?– Lump Everything Together (or Let’s Examine Terms)4.?FIN?– Factorise If Necessary