If it's not what You are looking for type in the equation solver your own equation and let us solve it.
u in (-oo:+oo)
u-(4/5) = 73/4 // - 73/4
u-(4/5)-(73/4) = 0
u-4/5-73/4 = 0
u-381/20 = 0 // + 381/20
u = 381/20
u = 381/20
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