Respuesta :

wegnerkolmp2741o

Answer:

x =7

Step-by-step explanation:

3x - 9 + 12 - 6x = -18

Combine like terms

-3x +3 = -18

Subtract 3 from each side

-3x +3 -3 = -18 -3

-3x = -21

Divide each side by-3

-3x /-3 = -21 /-3

x =7

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Answer:

[tex]x=7[/tex]

Step-by-step explanation:

[tex]3x - 9 + 12 - 6x = -18[/tex]

[tex]3x+ - 9 + 12+ - 6x = -18[/tex]

[tex]3x+- 6x + - 9 + 12+ = -18[/tex]

[tex]-3x+ 3= -18[/tex]

[tex]-3x= -18-3[/tex]

[tex]-3x= -21[/tex]

[tex]3x=21[/tex]

[tex]x=21/3[/tex]

[tex]x=7[/tex]

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