Dans les proportions ci-dessous, calculez la valeur de la variable.

-1-
y =

-2-
w =

-3-
k =

-4-
z =

-5-
x =

-6-
x =

-7-
k =

-8-
x =

-9-
x =

-10-
x =

-11-
x =

-12-
x =

-13-
y =

-14-
x =

-15-
x =

-16-
x =

-17-
x =

-18-
y =

-19-
y =

-20-
x =

-21-
x =

-22-
x =

-23-
x =

-24-
x =

-25-
x =

-26-
x =

-27-
x =

-28-
x =

-29-
x =

-30-
z =

-31-
w =