.5n+3=21

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Solution for .5n+3=21 equation: 


Simplifying
0.5n + 3 = 21

Reorder the terms:
3 + 0.5n = 21

Solving
3 + 0.5n = 21

Solving for variable 'n'.

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

Add '-3' to each side of the equation.
3 + -3 + 0.5n = 21 + -3

Combine like terms: 3 + -3 = 0
0 + 0.5n = 21 + -3
0.5n = 21 + -3

Combine like terms: 21 + -3 = 18
0.5n = 18

Divide each side by '0.5'.
n = 36

Simplifying
n = 36

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