-20.0=-5.0c

Solution for -20.0=-5.0c equation:

Simplifying
-20.0 = -5.0c

Solving
-20.0 = -5.0c

Solving for variable 'c'.

Move all terms containing c to the left, all other terms to the right.

Add '5.0c' to each side of the equation.
-20.0 + 5.0c = -5.0c + 5.0c

Combine like terms: -5.0c + 5.0c = 0.0
-20.0 + 5.0c = 0.0

Add '20.0' to each side of the equation.
-20.0 + 20.0 + 5.0c = 0.0 + 20.0

Combine like terms: -20.0 + 20.0 = 0.0
0.0 + 5.0c = 0.0 + 20.0
5.0c = 0.0 + 20.0

Combine like terms: 0.0 + 20.0 = 20
5.0c = 20

Divide each side by '5.0'.
c = 4

Simplifying
c = 4