solve the equation 2/5(4n-1) - {2n -1+n/3} = 1/3n + 4/3
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2/5(4n-1)-{2n-1+n/3}=1/3n+4/3
8/5n-2/5-7n/3=n+4/3
-55n-30/75=n+4/3
-55n-30=25n+100
-55n-25n=100+30
-75n=130
n=130/-7
n=18.57
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