.5(2n)-.10=3.50

Solution for .5(2n)-.10=3.50 equation:

Simplifying
0.5(2n) + -0.10 = 3.50

Remove parenthesis around (2n)
0.5 * 2n + -0.10 = 3.50

Multiply 0.5 * 2
1n + -0.10 = 3.50

Reorder the terms:
-0.10 + 1n = 3.50

Solving
-0.10 + 1n = 3.50

Solving for variable 'n'.

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

Add '0.10' to each side of the equation.
-0.10 + 0.10 + 1n = 3.50 + 0.10

Combine like terms: -0.10 + 0.10 = 0.00
0.00 + 1n = 3.50 + 0.10
1n = 3.50 + 0.10

Combine like terms: 3.50 + 0.10 = 3.6
1n = 3.6

Divide each side by '1'.
n = 3.6

Simplifying
n = 3.6