B=3x+4yB = 3x + 4yB=3x+4y
x=6x = 6x=6 y=−2y = -2y=−2
Work out the value of BBB.
Practise Edexcel GCSE Maths Substitution with exam-style questions for Foundation and Higher tier. 100 questions, matched to the Edexcel GCSE Maths (1MA1) specification and written in Paper 1, Paper 2 and Paper 3 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.