20=30-2n

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Solution for 20=30-2n equation:


Simplifying
20 = 30 + -2n

Solving
20 = 30 + -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 = 30 + -2n + 2n

Combine like terms: -2n + 2n = 0
20 + 2n = 30 + 0
20 + 2n = 30

Add '-20' to each side of the equation.
20 + -20 + 2n = 30 + -20

Combine like terms: 20 + -20 = 0
0 + 2n = 30 + -20
2n = 30 + -20

Combine like terms: 30 + -20 = 10
2n = 10

Divide each side by '2'.
n = 5

Simplifying
n = 5

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