20=2n-1

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Solution for 20=2n-1 equation:


Simplifying
20 = 2n + -1

Reorder the terms:
20 = -1 + 2n

Solving
20 = -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.
20 + -2n = -1 + 2n + -2n

Combine like terms: 2n + -2n = 0
20 + -2n = -1 + 0
20 + -2n = -1

Add '-20' to each side of the equation.
20 + -20 + -2n = -1 + -20

Combine like terms: 20 + -20 = 0
0 + -2n = -1 + -20
-2n = -1 + -20

Combine like terms: -1 + -20 = -21
-2n = -21

Divide each side by '-2'.
n = 10.5

Simplifying
n = 10.5

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