Respuesta :

Answer:

1)

[tex]9 - x = 1[/tex]

[tex]9-x-9=1-9[/tex]

[tex]-x=-8[/tex]

[tex]\cfrac{-x}{-1}=\cfrac{-8}{-1}[/tex]

[tex]\boxed{x=8}[/tex]

2)

[tex]-252 = 21k[/tex]

[tex]21k=-252[/tex]

[tex]\cfrac{21k}{21}=\cfrac{-252}{21}[/tex]

[tex]\boxed{k=-12}[/tex]

Answer:

x= -6   k=-12

Step-by-step explanation:

15-9 is 6.   9+6=15 9-(-6)=15 because when two negatives are together they make a positive. (--)=+      K=-21 because -252/21 is -12.