Respuesta :

wegnerkolmp2741o

Answer:

x = 21

Step-by-step explanation:

x- 12 = 9

Add 12 to each side

x- 12+12 = 9+12

x = 21

CharlieBrown2002

Answer:

[tex]\huge \boxed{x=21}[/tex]

Step-by-step explanation:

[tex]\Huge\textnormal{Add 12 from both sides of the equation.}[/tex]

[tex]\displaystyle x-12+12=9+12[/tex]

[tex]\Huge \textnormal{Simplify and solve to find the answer.}[/tex]

[tex]\displaystyle 9+12=21[/tex]

[tex]\huge \boxed{x=21}[/tex], which is our answer.

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