(4-n)2.1-4.3n=15+4

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Solution for (4-n)2.1-4.3n=15+4 equation: 



(4-n)2.1-4.3n=15+4

We move all terms to the left:

(4-n)2.1-4.3n-(15+4)=0

We add all the numbers together, and all the variables

(-1n+4)2.1-4.3n-19=0

We add all the numbers together, and all the variables

-4.3n+(-1n+4)2.1-19=0

We multiply parentheses

-4.3n-2.1n+8.4-19=0

We add all the numbers together, and all the variables

-6.4n-10.6=0

We move all terms containing n to the left, all other terms to the right

-6.4n=10.6

n=10.6/-6.4

n=-1+1.9090909090909/2.9090909090909

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