-(-3n-7)-3(n+7)=1-2n+4n-9

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Solution for -(-3n-7)-3(n+7)=1-2n+4n-9 equation:


Simplifying
-1(-3n + -7) + -3(n + 7) = 1 + -2n + 4n + -9

Reorder the terms:
-1(-7 + -3n) + -3(n + 7) = 1 + -2n + 4n + -9
(-7 * -1 + -3n * -1) + -3(n + 7) = 1 + -2n + 4n + -9
(7 + 3n) + -3(n + 7) = 1 + -2n + 4n + -9

Reorder the terms:
7 + 3n + -3(7 + n) = 1 + -2n + 4n + -9
7 + 3n + (7 * -3 + n * -3) = 1 + -2n + 4n + -9
7 + 3n + (-21 + -3n) = 1 + -2n + 4n + -9

Reorder the terms:
7 + -21 + 3n + -3n = 1 + -2n + 4n + -9

Combine like terms: 7 + -21 = -14
-14 + 3n + -3n = 1 + -2n + 4n + -9

Combine like terms: 3n + -3n = 0
-14 + 0 = 1 + -2n + 4n + -9
-14 = 1 + -2n + 4n + -9

Reorder the terms:
-14 = 1 + -9 + -2n + 4n

Combine like terms: 1 + -9 = -8
-14 = -8 + -2n + 4n

Combine like terms: -2n + 4n = 2n
-14 = -8 + 2n

Solving
-14 = -8 + 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.
-14 + -2n = -8 + 2n + -2n

Combine like terms: 2n + -2n = 0
-14 + -2n = -8 + 0
-14 + -2n = -8

Add '14' to each side of the equation.
-14 + 14 + -2n = -8 + 14

Combine like terms: -14 + 14 = 0
0 + -2n = -8 + 14
-2n = -8 + 14

Combine like terms: -8 + 14 = 6
-2n = 6

Divide each side by '-2'.
n = -3

Simplifying
n = -3

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