3+4n=2n-9

Solution for 3+4n=2n-9 equation:

Simplifying
3 + 4n = 2n + -9

Reorder the terms:
3 + 4n = -9 + 2n

Solving
3 + 4n = -9 + 2n

Solving for variable 'n'.

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

Add '-2n' to each side of the equation.
3 + 4n + -2n = -9 + 2n + -2n

Combine like terms: 4n + -2n = 2n
3 + 2n = -9 + 2n + -2n

Combine like terms: 2n + -2n = 0
3 + 2n = -9 + 0
3 + 2n = -9

Add '-3' to each side of the equation.
3 + -3 + 2n = -9 + -3

Combine like terms: 3 + -3 = 0
0 + 2n = -9 + -3
2n = -9 + -3

Combine like terms: -9 + -3 = -12
2n = -12

Divide each side by '2'.
n = -6

Simplifying
n = -6