1/7-3/7=4/7u-3/7u

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Solution for 1/7-3/7=4/7u-3/7u equation: 


u in (-oo:+oo)

1/7-(3/7) = (4/7)*u-((3/7)*u) // - (4/7)*u-((3/7)*u)

(3/7)*u-((4/7)*u)+1/7-(3/7) = 0

(-4/7)*u+(3/7)*u+1/7-3/7 = 0

-1/7*u-2/7 = 0 // + 2/7

-1/7*u = 2/7 // : -1/7

u = 2/7/(-1/7)

u = -2

u = -2

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