20.5=-9+5(n-3)

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Solution for 20.5=-9+5(n-3) equation: 


Simplifying
20.5 = -9 + 5(n + -3)

Reorder the terms:
20.5 = -9 + 5(-3 + n)
20.5 = -9 + (-3 * 5 + n * 5)
20.5 = -9 + (-15 + 5n)

Combine like terms: -9 + -15 = -24
20.5 = -24 + 5n

Solving
20.5 = -24 + 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.
20.5 + -5n = -24 + 5n + -5n

Combine like terms: 5n + -5n = 0
20.5 + -5n = -24 + 0
20.5 + -5n = -24

Add '-20.5' to each side of the equation.
20.5 + -20.5 + -5n = -24 + -20.5

Combine like terms: 20.5 + -20.5 = 0.0
0.0 + -5n = -24 + -20.5
-5n = -24 + -20.5

Combine like terms: -24 + -20.5 = -44.5
-5n = -44.5

Divide each side by '-5'.
n = 8.9

Simplifying
n = 8.9

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