Question

1/a-y=1/y

solve for "y"

Answer 1

Please change your screenname, it is just a little presumptious that somehow you should go to the head of the line.

is the left side

1/(a-y) or (1/a) - y ?

Answer 2

If it is 1/(a-y) = 1/y

then cross multiply to get y = a -y

solve for y in terms of a.

Answer 3

cross multiply is a very dangerous term for beginning students. Change your thinking to

multipy both sides by y then
multiply both sides by a-y
giving
y=a-y
then add y to both sides
2y=a
divide both sides by 2
y=a/2

Answer 4

three times a number, minus 6,is the same as two times a number, plus 3 find the numb