Answer:
N=4
Step-by-step explanation:
Simplifying
3 + 4n + n = 2n + 15
Combine like terms: 4n + n = 5n
3 + 5n = 2n + 15
Reorder the terms:
3 + 5n = 15 + 2n
Solving
3 + 5n = 15 + 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 + 5n + -2n = 15 + 2n + -2n
Combine like terms: 5n + -2n = 3n
3 + 3n = 15 + 2n + -2n
Combine like terms: 2n + -2n = 0
3 + 3n = 15 + 0
3 + 3n = 15
Add '-3' to each side of the equation.
3 + -3 + 3n = 15 + -3
Combine like terms: 3 + -3 = 0
0 + 3n = 15 + -3
3n = 15 + -3
Combine like terms: 15 + -3 = 12
3n = 12
Divide each side by '3'.
n = 4
Simplifying
n = 4
