4.6-(-n)=-0.4

Solution for 4.6-(-n)=-0.4 equation:

Simplifying
4.6 + -1(-1n) = -0.4

Remove parenthesis around (-1n)
4.6 + -1 * -1n = -0.4

Multiply -1 * -1
4.6 + 1n = -0.4

Solving
4.6 + 1n = -0.4

Solving for variable 'n'.

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

Add '-4.6' to each side of the equation.
4.6 + -4.6 + 1n = -0.4 + -4.6

Combine like terms: 4.6 + -4.6 = 0.0
0.0 + 1n = -0.4 + -4.6
1n = -0.4 + -4.6

Combine like terms: -0.4 + -4.6 = -5
1n = -5

Divide each side by '1'.
n = -5

Simplifying
n = -5