# 9=4n-(8n+1)

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## Solution for 9=4n-(8n+1) equation:

Simplifying
9 = 4n + -1(8n + 1)

Reorder the terms:
9 = 4n + -1(1 + 8n)
9 = 4n + (1 * -1 + 8n * -1)
9 = 4n + (-1 + -8n)

Reorder the terms:
9 = -1 + 4n + -8n

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

Solving
9 = -1 + -4n

Solving for variable 'n'.

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

Add '4n' to each side of the equation.
9 + 4n = -1 + -4n + 4n

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

Add '-9' to each side of the equation.
9 + -9 + 4n = -1 + -9

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

Combine like terms: -1 + -9 = -10
4n = -10

Divide each side by '4'.
n = -2.5

Simplifying
n = -2.5`