The following equation relates u and t.
3t=(1)/(7+u)
Solve for u as an explicit function of t.
3t=(1)/(7+u)
21t + 3tu = 1
3tu = 1 -21t
u = (1-21t)/(3t) , t ≠ 0
3t=(1)/(7+u)
Solve for u as an explicit function of t.
21t + 3tu = 1
3tu = 1 -21t
u = (1-21t)/(3t) , t ≠ 0