n+(n-1)+(n-3)=75

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Solution for n+(n-1)+(n-3)=75 equation:


Simplifying
n + (n + -1) + (n + -3) = 75

Reorder the terms:
n + (-1 + n) + (n + -3) = 75

Remove parenthesis around (-1 + n)
n + -1 + n + (n + -3) = 75

Reorder the terms:
n + -1 + n + (-3 + n) = 75

Remove parenthesis around (-3 + n)
n + -1 + n + -3 + n = 75

Reorder the terms:
-1 + -3 + n + n + n = 75

Combine like terms: -1 + -3 = -4
-4 + n + n + n = 75

Combine like terms: n + n = 2n
-4 + 2n + n = 75

Combine like terms: 2n + n = 3n
-4 + 3n = 75

Solving
-4 + 3n = 75

Solving for variable 'n'.

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

Add '4' to each side of the equation.
-4 + 4 + 3n = 75 + 4

Combine like terms: -4 + 4 = 0
0 + 3n = 75 + 4
3n = 75 + 4

Combine like terms: 75 + 4 = 79
3n = 79

Divide each side by '3'.
n = 26.33333333

Simplifying
n = 26.33333333

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