3-3n=42

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Solution for 3-3n=42 equation: 


Simplifying
3 + -3n = 42

Solving
3 + -3n = 42

Solving for variable 'n'.

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

Add '-3' to each side of the equation.
3 + -3 + -3n = 42 + -3

Combine like terms: 3 + -3 = 0
0 + -3n = 42 + -3
-3n = 42 + -3

Combine like terms: 42 + -3 = 39
-3n = 39

Divide each side by '-3'.
n = -13

Simplifying
n = -13

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