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-2.1-5.7n=-3.8-4n
We move all terms to the left:
-2.1-5.7n-(-3.8-4n)=0
We add all the numbers together, and all the variables
-5.7n-(-4n-3.8)-2.1=0
We get rid of parentheses
-5.7n+4n+3.8-2.1=0
We add all the numbers together, and all the variables
-1.7n+1.7=0
We move all terms containing n to the left, all other terms to the right
-1.7n=-1.7
n=-1.7/-1.7
n=1
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