20+n=2n-1

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Solution for 20+n=2n-1 equation:


Simplifying
20 + n = 2n + -1

Reorder the terms:
20 + n = -1 + 2n

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

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

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

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

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

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

Divide each side by '-1'.
n = 21

Simplifying
n = 21

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