300=5+(n-1)*10

Solution for 300=5+(n-1)*10 equation:

Simplifying
300 = 5 + (n + -1) * 10

Reorder the terms:
300 = 5 + (-1 + n) * 10

Reorder the terms for easier multiplication:
300 = 5 + 10(-1 + n)
300 = 5 + (-1 * 10 + n * 10)
300 = 5 + (-10 + 10n)

Combine like terms: 5 + -10 = -5
300 = -5 + 10n

Solving
300 = -5 + 10n

Solving for variable 'n'.

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

Add '-10n' to each side of the equation.
300 + -10n = -5 + 10n + -10n

Combine like terms: 10n + -10n = 0
300 + -10n = -5 + 0
300 + -10n = -5

Add '-300' to each side of the equation.
300 + -300 + -10n = -5 + -300

Combine like terms: 300 + -300 = 0
0 + -10n = -5 + -300
-10n = -5 + -300

Combine like terms: -5 + -300 = -305
-10n = -305

Divide each side by '-10'.
n = 30.5

Simplifying
n = 30.5