Mathematics for IGCSE & O level - Functions (Section 1 - No. 30) | ExamPlay

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Mathematics for IGCSE & O level - Functions (Section 1 - No. 30)

If f(x) = 2x - 3 and f(x) = 7, what is x?

2

5

10

14

Wyjaśnienie

2x - 3 = 7 => 2x = 10 => x = 5

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