10n+21=57

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Solution for 10n+21=57 equation: 


Simplifying
10n + 21 = 57

Reorder the terms:
21 + 10n = 57

Solving
21 + 10n = 57

Solving for variable 'n'.

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

Add '-21' to each side of the equation.
21 + -21 + 10n = 57 + -21

Combine like terms: 21 + -21 = 0
0 + 10n = 57 + -21
10n = 57 + -21

Combine like terms: 57 + -21 = 36
10n = 36

Divide each side by '10'.
n = 3.6

Simplifying
n = 3.6

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