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0.25n+4=0.4n
We move all terms to the left:
0.25n+4-(0.4n)=0
We add all the numbers together, and all the variables
0.25n-(+0.4n)+4=0
We get rid of parentheses
0.25n-0.4n+4=0
We add all the numbers together, and all the variables
-0.15n+4=0
We move all terms containing n to the left, all other terms to the right
-0.15n=-4
n=-4/-0.15
n=26+0.1/0.15
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