43=5+(n-1)2

Solution for 43=5+(n-1)2 equation:

Simplifying
43 = 5 + (n + -1) * 2

Reorder the terms:
43 = 5 + (-1 + n) * 2

Reorder the terms for easier multiplication:
43 = 5 + 2(-1 + n)
43 = 5 + (-1 * 2 + n * 2)
43 = 5 + (-2 + 2n)

Combine like terms: 5 + -2 = 3
43 = 3 + 2n

Solving
43 = 3 + 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.
43 + -2n = 3 + 2n + -2n

Combine like terms: 2n + -2n = 0
43 + -2n = 3 + 0
43 + -2n = 3

Add '-43' to each side of the equation.
43 + -43 + -2n = 3 + -43

Combine like terms: 43 + -43 = 0
0 + -2n = 3 + -43
-2n = 3 + -43

Combine like terms: 3 + -43 = -40
-2n = -40

Divide each side by '-2'.
n = 20

Simplifying
n = 20