-4(n-1)=9

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


Simplifying
-4(n + -1) = 9

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

Solving
4 + -4n = 9

Solving for variable 'n'.

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

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

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

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

Divide each side by '-4'.
n = -1.25

Simplifying
n = -1.25

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