Answered

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when 7 is added to an unknown number the result is twice the unknown number.what is the unknown number??

Sagot :

we can write an equation with the condition so:

[tex]7+x=2x[/tex]

and we can solve for x so:

[tex]\begin{gathered} 7=2x-x \\ 7=x \end{gathered}[/tex]

So the unknow number is 7

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