20=-2n

Solution for 20=-2n equation:

Simplifying
20 = -2n

Solving
20 = -2n

Solving for variable 'n'.

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

Add '2n' to each side of the equation.
20 + 2n = -2n + 2n

Combine like terms: -2n + 2n = 0
20 + 2n = 0

Add '-20' to each side of the equation.
20 + -20 + 2n = 0 + -20

Combine like terms: 20 + -20 = 0
0 + 2n = 0 + -20
2n = 0 + -20

Combine like terms: 0 + -20 = -20
2n = -20

Divide each side by '2'.
n = -10

Simplifying
n = -10