4MA1/1F Jan 2021, Question 7: Expand and Simplify
Pearson Edexcel International GCSE Mathematics A 4MA1 · Paper 1F (Foundation) · Calculator · 4 marks
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The question, in short
Simplify an algebraic expression by collecting like terms, then solve a two-step linear equation for n.
Summarised in our own words. Use the official paper for the exact wording and any diagrams.
Part (a) · 2 marks
Simplify 10x + 4y + 3x − 6y by combining like terms.
- 110x + 3x = 13x
- 24y − 6y = −2y
- 313x − 2y
Answer13x − 2y
Part (b) · 2 marks
Solve 2n + 5 = 16 to find the value of n.
- 12n + 5 = 16
- 22n = 16 − 5
- 32n = 11
- 4n = 11 ÷ 2
- 5n = 5.5
Answer5.5
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