change the subject of the formula to the variable indicated?

Question

solve v=b-u/k for u
show working please

Answer 1

v = b - u/k
v - b = u/k
k(v-b) = u

Answer 2

There seems to be some disagreement among the answerers about whether you mean

v = (b - u) / k <-- stmc thought this

or

v = b - (u / k) <-- Grazed and Ignoramus thought this

Grazed lost a minus sign along the way and got the wrong answer. JR is not thinking at all.

If you would state your problem clearly you might get better answers. As it stands, you can have your pick.

Answer 3

v=b-u/k
multiply both sides by k
kv = bk - u
add u to both sides
u + kv = bk
subtract kv from both sides
u = bk - kv
factor out the k on the right
u = k(b-v)

Answer 4

v=b-u/k
v-b=b+b - u/k
v-b*-k=-u/k*-k
v-b*-k=u
u= (v-b)-k

Answer 5

is it v=(b-u)/k? if so then
vk=b-u
-u=vk-b
u= -(vk-b)