6.4n-5.4n-3.1=-.3

Solution for 6.4n-5.4n-3.1=-.3 equation:

Simplifying
6.4n + -5.4n + -3.1 = -0.3

Reorder the terms:
-3.1 + 6.4n + -5.4n = -0.3

Combine like terms: 6.4n + -5.4n = 1n
-3.1 + 1n = -0.3

Solving
-3.1 + 1n = -0.3

Solving for variable 'n'.

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

Add '3.1' to each side of the equation.
-3.1 + 3.1 + 1n = -0.3 + 3.1

Combine like terms: -3.1 + 3.1 = 0.0
0.0 + 1n = -0.3 + 3.1
1n = -0.3 + 3.1

Combine like terms: -0.3 + 3.1 = 2.8
1n = 2.8

Divide each side by '1'.
n = 2.8

Simplifying
n = 2.8