Question

Find all non-negative integer solutions for (x,y) where x+y=4. Please do share the steps.

Answer 1

let x=0,1,2,3,4
y=4,3,2,1,0

respectively

Answer 2

When x=0, and y=4, x+y= 0+4= 4
When x=1, and y=3, x+y= 1+3= 4
When x=2, and y=2, x+y= 2+2= 4
When x=3, and y=1, x+y= 3+1= 4
When x=4, and y=0, x+y= 4+0=4