21n-64=104

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Solution for 21n-64=104 equation: 


Simplifying
21n + -64 = 104

Reorder the terms:
-64 + 21n = 104

Solving
-64 + 21n = 104

Solving for variable 'n'.

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

Add '64' to each side of the equation.
-64 + 64 + 21n = 104 + 64

Combine like terms: -64 + 64 = 0
0 + 21n = 104 + 64
21n = 104 + 64

Combine like terms: 104 + 64 = 168
21n = 168

Divide each side by '21'.
n = 8

Simplifying
n = 8

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