-8n+21=3(1-3n)-2

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Solution for -8n+21=3(1-3n)-2 equation:


Simplifying
-8n + 21 = 3(1 + -3n) + -2

Reorder the terms:
21 + -8n = 3(1 + -3n) + -2
21 + -8n = (1 * 3 + -3n * 3) + -2
21 + -8n = (3 + -9n) + -2

Reorder the terms:
21 + -8n = 3 + -2 + -9n

Combine like terms: 3 + -2 = 1
21 + -8n = 1 + -9n

Solving
21 + -8n = 1 + -9n

Solving for variable 'n'.

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

Add '9n' to each side of the equation.
21 + -8n + 9n = 1 + -9n + 9n

Combine like terms: -8n + 9n = 1n
21 + 1n = 1 + -9n + 9n

Combine like terms: -9n + 9n = 0
21 + 1n = 1 + 0
21 + 1n = 1

Add '-21' to each side of the equation.
21 + -21 + 1n = 1 + -21

Combine like terms: 21 + -21 = 0
0 + 1n = 1 + -21
1n = 1 + -21

Combine like terms: 1 + -21 = -20
1n = -20

Divide each side by '1'.
n = -20

Simplifying
n = -20

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