When you subtract 10 from thrice a number, the result is 17. Find th

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When you subtract 10 from thrice a number, the result is 17. Find the unknown number. [2 MARKS]

Options:

Answer: Option A
:

Framing the equation: 1 Mark
Result: 1 Mark
Let the number be y
Then, $3 y - 10 = 17$
$\Rightarrow 3 y = 17 + 10$
$\Rightarrow 3 y = 27$
$\Rightarrow y = 9$

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