2n+9+20=8

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Solution for 2n+9+20=8 equation: 


Simplifying
2n + 9 + 20 = 8

Reorder the terms:
9 + 20 + 2n = 8

Combine like terms: 9 + 20 = 29
29 + 2n = 8

Solving
29 + 2n = 8

Solving for variable 'n'.

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

Add '-29' to each side of the equation.
29 + -29 + 2n = 8 + -29

Combine like terms: 29 + -29 = 0
0 + 2n = 8 + -29
2n = 8 + -29

Combine like terms: 8 + -29 = -21
2n = -21

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

Simplifying
n = -10.5

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