How to solve 5x-5y= -20 and what would be the value of x-y??? Please show step by step

Guest May 30, 2017

#2

#3**+2 **

x = y - 4

y = 4 - x

If you want a specific solution, like a number, there is not just one solution, for example..

x = 1 and y = 5

or....

x = 0 and y = 4

or....

x = -10 and y = -6

Pick any number for x, and you can find one for y that will make the equation true (and vice versa).

So, there are infinitely many solutions to this.

The graph of all these solutions will be a straight line that will look like this:

https://www.desmos.com/calculator/ars33alejx

Hope that made some sense! :)

hectictar
May 30, 2017