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the sum of twice a number and 18 less than the number is the same difference between -30 and the number. What is the number?

Respuesta :

naǫ
x - the number

[tex]2x+x-18=-30-x \\ 3x-18=-30-x \\ 3x+x=-30+18 \\ 4x=-12 \\ x=\frac{-12}{4} \\ x=-3[/tex]

The number is -3.

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