9n+3(2n+1)=15

Solution for 9n+3(2n+1)=15 equation:

Simplifying
9n + 3(2n + 1) = 15

Reorder the terms:
9n + 3(1 + 2n) = 15
9n + (1 * 3 + 2n * 3) = 15
9n + (3 + 6n) = 15

Reorder the terms:
3 + 9n + 6n = 15

Combine like terms: 9n + 6n = 15n
3 + 15n = 15

Solving
3 + 15n = 15

Solving for variable 'n'.

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

Add '-3' to each side of the equation.
3 + -3 + 15n = 15 + -3

Combine like terms: 3 + -3 = 0
0 + 15n = 15 + -3
15n = 15 + -3

Combine like terms: 15 + -3 = 12
15n = 12

Divide each side by '15'.
n = 0.8

Simplifying
n = 0.8