6+21=4n+57

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Solution for 6+21=4n+57 equation: 


Simplifying
6 + 21 = 4n + 57

Combine like terms: 6 + 21 = 27
27 = 4n + 57

Reorder the terms:
27 = 57 + 4n

Solving
27 = 57 + 4n

Solving for variable 'n'.

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

Add '-4n' to each side of the equation.
27 + -4n = 57 + 4n + -4n

Combine like terms: 4n + -4n = 0
27 + -4n = 57 + 0
27 + -4n = 57

Add '-27' to each side of the equation.
27 + -27 + -4n = 57 + -27

Combine like terms: 27 + -27 = 0
0 + -4n = 57 + -27
-4n = 57 + -27

Combine like terms: 57 + -27 = 30
-4n = 30

Divide each side by '-4'.
n = -7.5

Simplifying
n = -7.5

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