4MA1/2H Nov 2021, Question 2: Solving Linear Equations
Pearson Edexcel International GCSE Mathematics A 4MA1 · Paper 2H (Higher) · Calculator · 4 marks
اقرأ هذا الحل مشروحاً بالعربي ←
The question, in short
Two rectangles have side lengths given in terms of x; rectangle B's area is twice rectangle A's. Form an equation and solve for x, showing working.
Summarised in our own words. Use the official paper for the exact wording and the diagram.
Solution · 4 marks
- 1Area A = 4(5 − x) = 20 − 4x; area B = 5(2x − 1) = 10x − 5
- 2B is twice A: 10x − 5 = 2(20 − 4x) = 40 − 8x
- 318x = 45
- 4x = 2.5
Answer2.5
Stuck on a step? Read the free lesson: Solving Linear Equations
Practise more solving linear equations questions
Real 4MA1 past-paper questions, marked on your working like the exam, with a worked solution for every part.
Practise free on LemmaraMore past-paper questions on solving linear equations
Also searched as: 4MA1 2H November 2021 · 4MA1/2H · 4ma1 nov21 2h · question 2.
Lemmara is an independent study tool, not affiliated with or endorsed by Pearson Edexcel. The worked solutions are Lemmara’s own.