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# How do you write “Twice the quantity a number and 3.”?

Last updated date: 15th Jul 2024
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Hint: We have to write the given word phrase into algebraic expression form. To convert the given word phrase into a variable expression we will first assume a variable x. Then we convert each word into variable and operator.

Then we will get $\Rightarrow x+3$
Then we will get $\Rightarrow 2\left( x+3 \right)$
So we get the variable expression as $2\left( x+3 \right)$ for the given word phrase.
Note: It is necessary to add parenthesis in the given expression as we have to find the twice of the whole quantity. Students may misinterpret the given word phrase and write the expression for the line Twice the quantity a number and 3 as $2x+3$. Another mistake students can make is that they convert the word ‘and’ as multiplication and write the expression for the line a number and 3 as $3x$, which gives the incorrect answer. So it is necessary to understand the meaning of each word before converting.