-13=3n-1+9n

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Solution for -13=3n-1+9n equation:


Simplifying
-13 = 3n + -1 + 9n

Reorder the terms:
-13 = -1 + 3n + 9n

Combine like terms: 3n + 9n = 12n
-13 = -1 + 12n

Solving
-13 = -1 + 12n

Solving for variable 'n'.

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

Add '-12n' to each side of the equation.
-13 + -12n = -1 + 12n + -12n

Combine like terms: 12n + -12n = 0
-13 + -12n = -1 + 0
-13 + -12n = -1

Add '13' to each side of the equation.
-13 + 13 + -12n = -1 + 13

Combine like terms: -13 + 13 = 0
0 + -12n = -1 + 13
-12n = -1 + 13

Combine like terms: -1 + 13 = 12
-12n = 12

Divide each side by '-12'.
n = -1

Simplifying
n = -1

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