0580/12 May/Jun 2024, Question 21: Solving Linear Equations
Cambridge IGCSE Mathematics 0580 · Paper 12 (Core) · Calculator · 1 mark
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The question, in short
Using the index law for division, solve 5⁷ ÷ 5ˣ = 5³ to find the value of x.
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Solution · 1 mark
- 15⁷ ÷ 5ˣ = 5⁷⁻ˣ, so 7 − x = 3
- 2x = 4
Answer4
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