Question

u=1-3v/vt-w make t the subject

Answer 1

$u = 1 - \dfrac{3v}{vt-w}$

$\dfrac{3v}{vt-w} = 1 - u$

$3v = (1 - u)(vt - w)$

$3v = vt - w - uvt + wu$

$vt - uvt = 3v + w - wu$

$t(v - uv) = 3v + w - wu$

$t = \dfrac{3v + w - wu}{v - uv}$