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 OCR GCSE Maths Substitution with exam-style questions for Foundation and Higher tier. 100 questions, matched to the OCR GCSE Maths (J560) specification and written in the written papers 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.