y=3x−zy = 3x - zy=3x−z
x=−9x = -9x=−9 z=4z = 4z=4
Work out the value of yyy.
Practise Eduqas GCSE Maths Substitution with exam-style questions for Foundation and Higher tier. 100 questions, matched to the Eduqas GCSE Maths (C300QS) specification and written in Component 1 and Component 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.