How do you solve for y in $6x-3y=9$ ?

Question

3692 views around the world

You can reuse this answer
Creative Commons License

Answer 1 · 2016-11-11T04:34:02

$y=2x-3$

As we have two variables $x$ and $y$ here

so we can solve for $y$ only in terms of $x$ .

As $6x-3y=9$ , adding $3y-9$ to both sides, we get

$6x-3y+3y-9=9+3y-9$

or $6x-cancel(3y)+cancel(3y)-9=cancel9+3y-cancel9$

or $6x-9=3y$

or $3y=6x-9$ - now multipying both sides by $1/3$ , we get

$1/3xx3y=1/3xx6x-1/3xx9$

or $y=2x-3$

How do you solve for y in 6x-3y=96x-3y=9?