n+(n+20)+(3n-15)=180

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Solution for n+(n+20)+(3n-15)=180 equation: 


Simplifying
n + (n + 20) + (3n + -15) = 180

Reorder the terms:
n + (20 + n) + (3n + -15) = 180

Remove parenthesis around (20 + n)
n + 20 + n + (3n + -15) = 180

Reorder the terms:
n + 20 + n + (-15 + 3n) = 180

Remove parenthesis around (-15 + 3n)
n + 20 + n + -15 + 3n = 180

Reorder the terms:
20 + -15 + n + n + 3n = 180

Combine like terms: 20 + -15 = 5
5 + n + n + 3n = 180

Combine like terms: n + n = 2n
5 + 2n + 3n = 180

Combine like terms: 2n + 3n = 5n
5 + 5n = 180

Solving
5 + 5n = 180

Solving for variable 'n'.

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

Add '-5' to each side of the equation.
5 + -5 + 5n = 180 + -5

Combine like terms: 5 + -5 = 0
0 + 5n = 180 + -5
5n = 180 + -5

Combine like terms: 180 + -5 = 175
5n = 175

Divide each side by '5'.
n = 35

Simplifying
n = 35

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