Question

Solve the Equation
-21 = 1/2c - 11

Answer 1

c = - 20

Explanation:

Given

- 21 =
`(1)/(2)` c - 11 ( add 11 to both sides )

- 10 =
`(1)/(2)` c ( multiply both sides by 2 to clear the fraction )

- 20 = c , that is

c = - 20

Answer 2

c = -20

Explanation:

-21=1/2c-11

-21+11=1/2c

-10=1/2c

-10*2=c

-20=c