3n-4=21.5

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Solution for 3n-4=21.5 equation: 


Simplifying
3n + -4 = 21.5

Reorder the terms:
-4 + 3n = 21.5

Solving
-4 + 3n = 21.5

Solving for variable 'n'.

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

Add '4' to each side of the equation.
-4 + 4 + 3n = 21.5 + 4

Combine like terms: -4 + 4 = 0
0 + 3n = 21.5 + 4
3n = 21.5 + 4

Combine like terms: 21.5 + 4 = 25.5
3n = 25.5

Divide each side by '3'.
n = 8.5

Simplifying
n = 8.5

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