Respuesta :

Answer:

c = -20

Step-by-step explanation:

-21=1/2c-11

-21+11=1/2c

-10=1/2c

-10*2=c

-20=c

Answer:

c = - 20

Step-by-step explanation:

Given

- 21 = [tex]\frac{1}{2}[/tex] c - 11 ( add 11 to both sides )

- 10 = [tex]\frac{1}{2}[/tex] c ( multiply both sides by 2 to clear the fraction )

- 20 = c , that is

c = - 20