12n+9-4n+16=

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Solution for 12n+9-4n+16= equation:


Simplifying
12n + 9 + -4n + 16 = 0

Reorder the terms:
9 + 16 + 12n + -4n = 0

Combine like terms: 9 + 16 = 25
25 + 12n + -4n = 0

Combine like terms: 12n + -4n = 8n
25 + 8n = 0

Solving
25 + 8n = 0

Solving for variable 'n'.

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

Add '-25' to each side of the equation.
25 + -25 + 8n = 0 + -25

Combine like terms: 25 + -25 = 0
0 + 8n = 0 + -25
8n = 0 + -25

Combine like terms: 0 + -25 = -25
8n = -25

Divide each side by '8'.
n = -3.125

Simplifying
n = -3.125

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