.75n-9=-12

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Solution for .75n-9=-12 equation: 


Simplifying
0.75n + -9 = -12

Reorder the terms:
-9 + 0.75n = -12

Solving
-9 + 0.75n = -12

Solving for variable 'n'.

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

Add '9' to each side of the equation.
-9 + 9 + 0.75n = -12 + 9

Combine like terms: -9 + 9 = 0
0 + 0.75n = -12 + 9
0.75n = -12 + 9

Combine like terms: -12 + 9 = -3
0.75n = -3

Divide each side by '0.75'.
n = -4

Simplifying
n = -4

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