4.2+1.3(n-2)=5.5

Solution for 4.2+1.3(n-2)=5.5 equation:

Simplifying
4.2 + 1.3(n + -2) = 5.5

Reorder the terms:
4.2 + 1.3(-2 + n) = 5.5
4.2 + (-2 * 1.3 + n * 1.3) = 5.5
4.2 + (-2.6 + 1.3n) = 5.5

Combine like terms: 4.2 + -2.6 = 1.6
1.6 + 1.3n = 5.5

Solving
1.6 + 1.3n = 5.5

Solving for variable 'n'.

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

Add '-1.6' to each side of the equation.
1.6 + -1.6 + 1.3n = 5.5 + -1.6

Combine like terms: 1.6 + -1.6 = 0.0
0.0 + 1.3n = 5.5 + -1.6
1.3n = 5.5 + -1.6

Combine like terms: 5.5 + -1.6 = 3.9
1.3n = 3.9

Divide each side by '1.3'.
n = 3

Simplifying
n = 3