Question

solve xyz=x+y+z for z

Answer 1

here you're not going to get a number answer

Answer 2

its going to be all variables

Answer 3

so on the left side of the equation, try an isolate z

Answer 4

xyz-z=x+y
z(xy-1)=x+y
z=(x+y)/(xy-1)

Answer 5

The first step would be to get all the terms with z in them on one side of the equation, and all other terms on the other side

then factor out z from the terms.
divide to isolate the z

Answer 6

how would you know what to do first ?

Answer 7

you can divide the left side by x and y to get z alone

Answer 8

moving all the terms that contain z to one side of the equation is always a good first step.