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0.40=0.5n
We move all terms to the left:
0.40-(0.5n)=0
We add all the numbers together, and all the variables
-(+0.5n)+0.40=0
We add all the numbers together, and all the variables
-(+0.5n)+0.4=0
We get rid of parentheses
-0.5n+0.4=0
We move all terms containing n to the left, all other terms to the right
-0.5n=-0.4
n=-0.4/-0.5
n=0.4/0.5
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