99=51+(n-1)2

Solution for 99=51+(n-1)2 equation:

Simplifying
99 = 51 + (n + -1) * 2

Reorder the terms:
99 = 51 + (-1 + n) * 2

Reorder the terms for easier multiplication:
99 = 51 + 2(-1 + n)
99 = 51 + (-1 * 2 + n * 2)
99 = 51 + (-2 + 2n)

Combine like terms: 51 + -2 = 49
99 = 49 + 2n

Solving
99 = 49 + 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 = 49 + 2n + -2n

Combine like terms: 2n + -2n = 0
99 + -2n = 49 + 0
99 + -2n = 49

Add '-99' to each side of the equation.
99 + -99 + -2n = 49 + -99

Combine like terms: 99 + -99 = 0
0 + -2n = 49 + -99
-2n = 49 + -99

Combine like terms: 49 + -99 = -50
-2n = -50

Divide each side by '-2'.
n = 25

Simplifying
n = 25