9n-5-4(n-5)=0

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Solution for 9n-5-4(n-5)=0 equation:


Simplifying
9n + -5 + -4(n + -5) = 0

Reorder the terms:
9n + -5 + -4(-5 + n) = 0
9n + -5 + (-5 * -4 + n * -4) = 0
9n + -5 + (20 + -4n) = 0

Reorder the terms:
-5 + 20 + 9n + -4n = 0

Combine like terms: -5 + 20 = 15
15 + 9n + -4n = 0

Combine like terms: 9n + -4n = 5n
15 + 5n = 0

Solving
15 + 5n = 0

Solving for variable 'n'.

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

Add '-15' to each side of the equation.
15 + -15 + 5n = 0 + -15

Combine like terms: 15 + -15 = 0
0 + 5n = 0 + -15
5n = 0 + -15

Combine like terms: 0 + -15 = -15
5n = -15

Divide each side by '5'.
n = -3

Simplifying
n = -3

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