3n-170=640

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Solution for 3n-170=640 equation: 


Simplifying
3n + -170 = 640

Reorder the terms:
-170 + 3n = 640

Solving
-170 + 3n = 640

Solving for variable 'n'.

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

Add '170' to each side of the equation.
-170 + 170 + 3n = 640 + 170

Combine like terms: -170 + 170 = 0
0 + 3n = 640 + 170
3n = 640 + 170

Combine like terms: 640 + 170 = 810
3n = 810

Divide each side by '3'.
n = 270

Simplifying
n = 270

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