Mia thinks of a number. She multiplies it by $5$ then subtracts $10$ . The answer is same as $2$ times the number plus $11$ . What number did Mia think of.

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Solution

Let the number mia thinks be $x$
According to the question,
$\begin{matrix} \Rightarrow 5 x - 10 = 2 x + 11 \Rightarrow 3 x = 21 ∴ x = 7 \end{matrix}$

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Mia thinks of a number. She multiplies it by 5 then subtracts 10. The answer is same as 2 times the number plus 11. What number did Mia think of.

Let the number mia thinks be xAccording to the question,⇒5x−10=2x+11⇒3x=21∴x=7

Mia thinks of a number. She multiplies it by $5$ then subtracts $10$ . The answer is same as $2$ times the number plus $11$ . What number did Mia think of.

Let the number mia thinks be $x$
According to the question,
$\begin{matrix} \Rightarrow 5 x - 10 = 2 x + 11 \Rightarrow 3 x = 21 ∴ x = 7 \end{matrix}$