-3.9=10.9n-9.9n+12

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Solution for -3.9=10.9n-9.9n+12 equation: 


Simplifying
-3.9 = 10.9n + -9.9n + 12

Reorder the terms:
-3.9 = 12 + 10.9n + -9.9n

Combine like terms: 10.9n + -9.9n = 1n
-3.9 = 12 + 1n

Solving
-3.9 = 12 + 1n

Solving for variable 'n'.

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

Add '-1n' to each side of the equation.
-3.9 + -1n = 12 + 1n + -1n

Combine like terms: 1n + -1n = 0
-3.9 + -1n = 12 + 0
-3.9 + -1n = 12

Add '3.9' to each side of the equation.
-3.9 + 3.9 + -1n = 12 + 3.9

Combine like terms: -3.9 + 3.9 = 0.0
0.0 + -1n = 12 + 3.9
-1n = 12 + 3.9

Combine like terms: 12 + 3.9 = 15.9
-1n = 15.9

Divide each side by '-1'.
n = -15.9

Simplifying
n = -15.9

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