20+.5n=100

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Solution for 20+.5n=100 equation: 


Simplifying
20 + 0.5n = 100

Solving
20 + 0.5n = 100

Solving for variable 'n'.

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

Add '-20' to each side of the equation.
20 + -20 + 0.5n = 100 + -20

Combine like terms: 20 + -20 = 0
0 + 0.5n = 100 + -20
0.5n = 100 + -20

Combine like terms: 100 + -20 = 80
0.5n = 80

Divide each side by '0.5'.
n = 160

Simplifying
n = 160

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