13=1+n+2n

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Solution for 13=1+n+2n equation: 


Simplifying
13 = 1 + n + 2n

Combine like terms: n + 2n = 3n
13 = 1 + 3n

Solving
13 = 1 + 3n

Solving for variable 'n'.

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

Add '-3n' to each side of the equation.
13 + -3n = 1 + 3n + -3n

Combine like terms: 3n + -3n = 0
13 + -3n = 1 + 0
13 + -3n = 1

Add '-13' to each side of the equation.
13 + -13 + -3n = 1 + -13

Combine like terms: 13 + -13 = 0
0 + -3n = 1 + -13
-3n = 1 + -13

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

Divide each side by '-3'.
n = 4

Simplifying
n = 4

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