How do you solve for x in $y = \frac{1 + 4 x}{7 - 9 x}$ $y = (1+4x)/(7-9x)$ ?

Question

1735 views around the world

You can reuse this answer
Creative Commons License

Answer 1 · 2016-08-18T11:14:18

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

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

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

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

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

How do you solve for x in y = (1+4x)/(7-9x)y=1+4x7−9xy = (1+4x)/(7-9x)?