Solve the system using any method.
5x-5y=0
7x-8y=8

Question

freckles · Answer

notice the first equation can be written as 5x=5y or x=y
just sub this into the second equation

anonymous · Answer

|dw:1441080456430:dw|
Is this how you set it up?

abhisar · Answer

Solve the system using any method.
5x-5y=0
7x-8y=8

You can write the first equation as
 $8y-8x=0$

Add this to the second equation and you will an equation in terms of x only. Find the value of x and then substitute it in any one of the parent equation to get value of y

anonymous · Answer

why would the 1st equation into 8y=8x=0?

abhisar · Answer

$5x-5y=0 \ \Rightarrow 5(x-y)=0 \ \Rightarrow 8x-8y=0 \Rightarrow 8y-8x=0$

abhisar · Answer

Right?

Now the second equation has -8y, so we can cancel them out out and life will become happy c:

midhun.madhu1987 · Answer

|dw:1441080926309:dw|

abhisar · Answer

Yes, you can do that way too

anonymous · Answer

Oh i understand now. :D Thanks so much!