4MA1/2H Jan 2023, Question 13: Solving Linear Equations
Pearson Edexcel International GCSE Mathematics A 4MA1 · Paper 2H (Higher) · Calculator · 3 marks
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The question, in short
Solve the equation (x + 3)/4 − (7 − x)/5 = 4.3, showing clear algebraic working to find x.
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Solution · 3 marks
- 15(x + 3) − 4(7 − x) = 20 × 4.3
- 25x + 15 − 28 + 4x = 86
- 39x − 13 = 86
- 49x = 99
- 5x = 11
Answer11
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