3=-1.5n

Solution for 3=-1.5n equation:

Simplifying
3 = -1.5n

Solving
3 = -1.5n

Solving for variable 'n'.

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

Add '1.5n' to each side of the equation.
3 + 1.5n = -1.5n + 1.5n

Combine like terms: -1.5n + 1.5n = 0.0
3 + 1.5n = 0.0

Add '-3' to each side of the equation.
3 + -3 + 1.5n = 0.0 + -3

Combine like terms: 3 + -3 = 0
0 + 1.5n = 0.0 + -3
1.5n = 0.0 + -3

Combine like terms: 0.0 + -3 = -3
1.5n = -3

Divide each side by '1.5'.
n = -2

Simplifying
n = -2