Question

How do you solve for x in `y = (1+4x)/(7-9x)`?

Answer 1

`x=(7y-1)/(9y+4), if, y!=-4/9`.

Explanation:

Given that, `y=(1+4x)/(7-9x)`

`rArr y(7-9x)=1+4x, i.e., 7y-9xy=1+4x`.

`rArr 7y-1=9xy+4x=x(9y+4)`.

`rArr (7y-1)/(9y+4)=x, if, y!=-4/9`.