n+(n-2)=90

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Solution for n+(n-2)=90 equation:


Simplifying
n + (n + -2) = 90

Reorder the terms:
n + (-2 + n) = 90

Remove parenthesis around (-2 + n)
n + -2 + n = 90

Reorder the terms:
-2 + n + n = 90

Combine like terms: n + n = 2n
-2 + 2n = 90

Solving
-2 + 2n = 90

Solving for variable 'n'.

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

Add '2' to each side of the equation.
-2 + 2 + 2n = 90 + 2

Combine like terms: -2 + 2 = 0
0 + 2n = 90 + 2
2n = 90 + 2

Combine like terms: 90 + 2 = 92
2n = 92

Divide each side by '2'.
n = 46

Simplifying
n = 46

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