3x + 5y = 78
2x - y = 0. I NEED ;[

Question

3x + 5y = 78 
2x - y = 0. I NEED ;[

anonymous · Answer

I figure you might solve that bottom equation for either y or x and then put that value into one of the spots in the top equation. Like, the bottom equation would be y = 2x or x = y/2. After that, I'm pretty sure you plug in one of those in place of x or y and solve for the one you are missing. Not entirely sure, but that's what it looks like to me.

toloaf · Answer

@Oris is right
y=2x
3x+5(2x)=78 <---- plugin it in
13x=78
x=78/13=6
x=6
y=2(6) <---- plugin it in 
y=12
There you have it. x=6 and y=12 :)

alones · Answer

Thbaks you guys<33

toloaf · Answer

No problem! Glad we could help! ^^

alones · Answer

yea i love the way u explained thnaks :D

toloaf · Answer

Haha np
Thanks for the testimonial =)

alones · Answer

YOUR MORE THANK WELCOMED =]