3n+1.2n=42

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Solution for 3n+1.2n=42 equation: 


Simplifying
3n + 1.2n = 42

Combine like terms: 3n + 1.2n = 4.2n
4.2n = 42

Solving
4.2n = 42

Solving for variable 'n'.

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

Divide each side by '4.2'.
n = 10

Simplifying
n = 10

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