99=1+(n-1)2

Solution for 99=1+(n-1)2 equation:

Simplifying
99 = 1 + (n + -1) * 2

Reorder the terms:
99 = 1 + (-1 + n) * 2

Reorder the terms for easier multiplication:
99 = 1 + 2(-1 + n)
99 = 1 + (-1 * 2 + n * 2)
99 = 1 + (-2 + 2n)

Combine like terms: 1 + -2 = -1
99 = -1 + 2n

Solving
99 = -1 + 2n

Solving for variable 'n'.

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

Add '-2n' to each side of the equation.
99 + -2n = -1 + 2n + -2n

Combine like terms: 2n + -2n = 0
99 + -2n = -1 + 0
99 + -2n = -1

Add '-99' to each side of the equation.
99 + -99 + -2n = -1 + -99

Combine like terms: 99 + -99 = 0
0 + -2n = -1 + -99
-2n = -1 + -99

Combine like terms: -1 + -99 = -100
-2n = -100

Divide each side by '-2'.
n = 50

Simplifying
n = 50