-9=20-5n

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Solution for -9=20-5n equation:


Simplifying
-9 = 20 + -5n

Solving
-9 = 20 + -5n

Solving for variable 'n'.

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

Add '5n' to each side of the equation.
-9 + 5n = 20 + -5n + 5n

Combine like terms: -5n + 5n = 0
-9 + 5n = 20 + 0
-9 + 5n = 20

Add '9' to each side of the equation.
-9 + 9 + 5n = 20 + 9

Combine like terms: -9 + 9 = 0
0 + 5n = 20 + 9
5n = 20 + 9

Combine like terms: 20 + 9 = 29
5n = 29

Divide each side by '5'.
n = 5.8

Simplifying
n = 5.8

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