Odpowiedź:
a) u = 2k - kr (k)
u = k(2 - r)
k = [tex]\frac{u}{2-r}[/tex]
b) v = pq + 9p (p)
9p = v - pq
p = [tex]\frac{v-pq}{9}[/tex]
c) p = [tex]\frac{r}{r-1}[/tex] (r)
p(r - 1) = r
pr - p = r
pr - r = p
r(p - 1) = p
r = [tex]\frac{p}{p-1}[/tex]
d) u = [tex]\frac{pr}{p + r}[/tex] (p)
u(p + r) = pr
up + ur = pr
up - pr = -ur
p(u - r) = -ur
p = [tex]\frac{-ur}{u-r}[/tex]
