myiah33701 myiah33701

10-08-2018
Mathematics

contestada

The difference of twice a number and 9 is less than 18

use the variable w for the unknown number

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altavistard altavistard

10-08-2018

Symbolically, this statement comes out to 2w - 9 < 18.

Adding 9 to both sides: 2w < 27. Finally, w < 27/2.

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