How to solve 5x-5y= -20 and what would be the value of x-y??? Please show step by step
5x - 5y = -20
We can divide through by 5, which gives us
x - y = -4
But what is y and what is x?
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
x = 0 and y = 4
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:
Hope that made some sense! :)