n+-0.3n=1.2n

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Solution for n+-0.3n=1.2n equation: 



n+-0.3n=1.2n

We move all terms to the left:

n+-0.3n-(1.2n)=0

We add all the numbers together, and all the variables

n-0.3n-(+1.2n)+=0

We add all the numbers together, and all the variables

0.7n-(+1.2n)=0

We get rid of parentheses

0.7n-1.2n=0

We add all the numbers together, and all the variables

-0.5n=0

n=0/-0.5

n=0

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