n+1+2n+n-4=180

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Solution for n+1+2n+n-4=180 equation:


Simplifying
n + 1 + 2n + n + -4 = 180

Reorder the terms:
1 + -4 + n + 2n + n = 180

Combine like terms: 1 + -4 = -3
-3 + n + 2n + n = 180

Combine like terms: n + 2n = 3n
-3 + 3n + n = 180

Combine like terms: 3n + n = 4n
-3 + 4n = 180

Solving
-3 + 4n = 180

Solving for variable 'n'.

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

Add '3' to each side of the equation.
-3 + 3 + 4n = 180 + 3

Combine like terms: -3 + 3 = 0
0 + 4n = 180 + 3
4n = 180 + 3

Combine like terms: 180 + 3 = 183
4n = 183

Divide each side by '4'.
n = 45.75

Simplifying
n = 45.75

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