f=5c−8f = 5c - 8f=5c−8
Make c c\,c the subject of the formula.
Practise Edexcel IGCSE Maths Changing the Subject of a Formula with exam-style questions for IGCSE Maths. 20 questions, matched to the Edexcel IGCSE Maths (4MA1) specification and written in Paper 1 and Paper 2 style. Every question includes a full worked solution and mark scheme, so you can see where marks are awarded rather than just whether you got the answer right.