Question

solve for x: z+xyz=w

Answer 1

Please use the title of the subject so that a teacher will know what you need help with.

Answer 2

Guru's formalities aside,

z+xyz=w
factor z.
z(1+xy)=w
divide by z
(1+xy)=w/z
subtract 1.
xy=(w/z)-1
divide by y
x=(w/yz)-(1/y)

And that's your answer! :)