3-(-8n-1)=3n-21

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Solution for 3-(-8n-1)=3n-21 equation:


Simplifying
3 + -1(-8n + -1) = 3n + -21

Reorder the terms:
3 + -1(-1 + -8n) = 3n + -21
3 + (-1 * -1 + -8n * -1) = 3n + -21
3 + (1 + 8n) = 3n + -21

Combine like terms: 3 + 1 = 4
4 + 8n = 3n + -21

Reorder the terms:
4 + 8n = -21 + 3n

Solving
4 + 8n = -21 + 3n

Solving for variable 'n'.

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

Add '-3n' to each side of the equation.
4 + 8n + -3n = -21 + 3n + -3n

Combine like terms: 8n + -3n = 5n
4 + 5n = -21 + 3n + -3n

Combine like terms: 3n + -3n = 0
4 + 5n = -21 + 0
4 + 5n = -21

Add '-4' to each side of the equation.
4 + -4 + 5n = -21 + -4

Combine like terms: 4 + -4 = 0
0 + 5n = -21 + -4
5n = -21 + -4

Combine like terms: -21 + -4 = -25
5n = -25

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

Simplifying
n = -5

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