3n+5n-7=57

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Solution for 3n+5n-7=57 equation: 


Simplifying
3n + 5n + -7 = 57

Reorder the terms:
-7 + 3n + 5n = 57

Combine like terms: 3n + 5n = 8n
-7 + 8n = 57

Solving
-7 + 8n = 57

Solving for variable 'n'.

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

Add '7' to each side of the equation.
-7 + 7 + 8n = 57 + 7

Combine like terms: -7 + 7 = 0
0 + 8n = 57 + 7
8n = 57 + 7

Combine like terms: 57 + 7 = 64
8n = 64

Divide each side by '8'.
n = 8

Simplifying
n = 8

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