Answer:
n =
Explanation:
+ n = 3n +
Multiply through by 9 to clear the fractions
7 + 9n = 27n + 1 ( subtract 9n from both sides )
7 = 18n + 1 ( subtract 1 from both sides )
6 = 18n ( divide both sides by 18 )
= n , that is
subtract n from both sides
7/9 = 2n +1/9
subtract 1/9 from both sides
6/9 = 2n
divide both sides ÷2
n = 6/18 = 1/3
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