6.6+6n=7n-0.4

Solution for 6.6+6n=7n-0.4 equation:

Simplifying
6.6 + 6n = 7n + -0.4

Reorder the terms:
6.6 + 6n = -0.4 + 7n

Solving
6.6 + 6n = -0.4 + 7n

Solving for variable 'n'.

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

Add '-7n' to each side of the equation.
6.6 + 6n + -7n = -0.4 + 7n + -7n

Combine like terms: 6n + -7n = -1n
6.6 + -1n = -0.4 + 7n + -7n

Combine like terms: 7n + -7n = 0
6.6 + -1n = -0.4 + 0
6.6 + -1n = -0.4

Add '-6.6' to each side of the equation.
6.6 + -6.6 + -1n = -0.4 + -6.6

Combine like terms: 6.6 + -6.6 = 0.0
0.0 + -1n = -0.4 + -6.6
-1n = -0.4 + -6.6

Combine like terms: -0.4 + -6.6 = -7
-1n = -7

Divide each side by '-1'.
n = 7

Simplifying
n = 7