(2+8)-4=nX2

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Solution for (2+8)-4=nX2 equation: 



(2+8)-4=nn2

We move all terms to the left:

(2+8)-4-(nn2)=0

We add all the numbers together, and all the variables

-nn2-4+10=0

We add all the numbers together, and all the variables

-nn2+6=0

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

-nn2=-6

n=-6/1

n=-6

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