Solve using the elimination method
3r-4s=-6
4r+3s=17
This would not be possible right? or would it be
7r-1s=9?

Question

Solve using the elimination method
3r-4s=-6
4r+3s=17
This would not be possible right?  or would it be
7r-1s=9?

anonymous · Answer

eliminate either r or s...s looks better since you have opposite signs already

anonymous · Answer

multiply by top by 3 and bottom by 4

anonymous · Answer

would it be r=1.3?

anonymous · Answer

9r - 12s = -18
16r +12s=68

anonymous · Answer

solve for r

anonymous · Answer

r= 10/3 sp sub that in to find s

anonymous · Answer

25r=50
r=2?

anonymous · Answer

3(10/3) - 4s = -6
10-4s=-6
-4s = -16
s= 4

anonymous · Answer

(10/3, 4)

anonymous · Answer

Ok I'm really confused, where did the 10 come from?  Sorry I have a learning disability and really have a hard time with math.

anonymous · Answer

it is solving a system by elimination with multiplication....ever heard of that

anonymous · Answer

Yes, I am doing that right now in my math class, please don't think I am looking for you to give me the answer.  I have Math 117 next and I have to understand this.

anonymous · Answer

It has only ever shown how to solve when y or x is a negative and positive of the same number never two different numbers

anonymous · Answer

can you come to whiteboard so I Can write it out http://www.twiddla.com/536745

anonymous · Answer

(2,3)

anonymous · Answer

thanks!

anonymous · Answer

YW!!!