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((3/7)*x^1)/2 = 3/n // - 3/n
((3/7)*x^1)/2-(3/n) = 0
((3/7)*x)/2-3*n^-1 = 0
3/14*x-3*n^-1 = 0 // + -3*n^-1
3/14*x = -(-3*n^-1) // : 3/14
x = (-(-3*n^-1))/3/14
x = 14*n^-1
x = 14*n^-1
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