(3n+9)-(2n+4)=

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


Simplifying
(3n + 9) + -1(2n + 4) = 0

Reorder the terms:
(9 + 3n) + -1(2n + 4) = 0

Remove parenthesis around (9 + 3n)
9 + 3n + -1(2n + 4) = 0

Reorder the terms:
9 + 3n + -1(4 + 2n) = 0
9 + 3n + (4 * -1 + 2n * -1) = 0
9 + 3n + (-4 + -2n) = 0

Reorder the terms:
9 + -4 + 3n + -2n = 0

Combine like terms: 9 + -4 = 5
5 + 3n + -2n = 0

Combine like terms: 3n + -2n = 1n
5 + 1n = 0

Solving
5 + 1n = 0

Solving for variable 'n'.

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

Add '-5' to each side of the equation.
5 + -5 + 1n = 0 + -5

Combine like terms: 5 + -5 = 0
0 + 1n = 0 + -5
1n = 0 + -5

Combine like terms: 0 + -5 = -5
1n = -5

Divide each side by '1'.
n = -5

Simplifying
n = -5

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