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

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Solution

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

Framing the equation: 1 Mark Result: 1 Mark Let the number be y Then, 3y−10=17 ⇒3y=17+10 ⇒3y=27 ⇒y=9

Framing the equation: 1 Mark
Result: 1 Mark

Let the number be y

Then, $3 y - 10 = 17$

$\Rightarrow 3 y = 17 + 10$

$\Rightarrow 3 y = 27$

$\Rightarrow y = 9$