H=f−2gH = f - 2gH=f−2g
Work out the value of H H\,H when f=12f = 12f=12 and g=−6g = -6g=−6
Practise Edexcel IGCSE Maths Substitution with exam-style questions for IGCSE Maths. 27 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.