[9(n+4)-18]-[2(n-3)+1]=

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Solution for [9(n+4)-18]-[2(n-3)+1]= equation:


Simplifying
[9(n + 4) + -18] + -1[2(n + -3) + 1] = 0

Reorder the terms:
[9(4 + n) + -18] + -1[2(n + -3) + 1] = 0
[(4 * 9 + n * 9) + -18] + -1[2(n + -3) + 1] = 0
[(36 + 9n) + -18] + -1[2(n + -3) + 1] = 0

Reorder the terms:
[36 + -18 + 9n] + -1[2(n + -3) + 1] = 0

Combine like terms: 36 + -18 = 18
[18 + 9n] + -1[2(n + -3) + 1] = 0

Remove brackets around [18 + 9n]
18 + 9n + -1[2(n + -3) + 1] = 0

Reorder the terms:
18 + 9n + -1[2(-3 + n) + 1] = 0
18 + 9n + -1[(-3 * 2 + n * 2) + 1] = 0
18 + 9n + -1[(-6 + 2n) + 1] = 0

Reorder the terms:
18 + 9n + -1[-6 + 1 + 2n] = 0

Combine like terms: -6 + 1 = -5
18 + 9n + -1[-5 + 2n] = 0
18 + 9n + [-5 * -1 + 2n * -1] = 0
18 + 9n + [5 + -2n] = 0

Reorder the terms:
18 + 5 + 9n + -2n = 0

Combine like terms: 18 + 5 = 23
23 + 9n + -2n = 0

Combine like terms: 9n + -2n = 7n
23 + 7n = 0

Solving
23 + 7n = 0

Solving for variable 'n'.

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

Add '-23' to each side of the equation.
23 + -23 + 7n = 0 + -23

Combine like terms: 23 + -23 = 0
0 + 7n = 0 + -23
7n = 0 + -23

Combine like terms: 0 + -23 = -23
7n = -23

Divide each side by '7'.
n = -3.285714286

Simplifying
n = -3.285714286

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