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Aleks04 [339]
3 years ago
10

What is 7+|−9−2x|=18

Mathematics
2 answers:
miss Akunina [59]3 years ago
8 0

Step-by-step explanation:

7+(-9-2x)=18

-9-2x=18-7

-9-2x=11

-2x=11+9

_2x=20

x=<u>2</u><u>0</u>

-2

x= -10

hope u want this..

Hitman42 [59]3 years ago
5 0

Answer Step by Step:

Move all terms not containing |-9-2x| to the right side of the equation.

|-9-2x| = 11

Remove the absolute value term. This creates a ±  on the right side of the equation because<u> |x| </u>= <u>±x</u>.

<em>-9-2x=±11</em>

Set up the positive portion of the ± solution.

<em>-9-2x=11</em>

Solve the first equation for x.

x = <em>-10</em>

Set up the negative portion of the ± solution.

<em>-9-2x=-11</em>

Solve the second equation for x.

x = <em>1</em>

(Answer)  x = <em>-10,1 </em>

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