Question

Show that \[\frac{ 10 }{ v }+\frac{ 10 }{ u }=4\]
and hence\[v=\frac{ 5u }{ (2u-5 }\]

Answer 1

multiply the 1st term(top and bottom) by u and the second term (top and bottom) by v
and you get

\[\frac{ 10u+10v }{ u*v } = 4\]

then multiply the left hand side and the right hand side by u*v

10u+10v = 4*u*v

now solve for v.

can you do the rest?

Answer 2

no

Answer 3

\[10u+10v=4uv\]
\[10v-4uv=-10u\]
\[v(10-4u)=-10u\]
\[v=\frac{-10u}{10-4u}=\frac{10u}{4u-10}=\frac{5u}{2u-5}\]

Answer 4

hello hollywood!

Answer 5

good now?