Question

x-15+y-10=x+y-25.Solve it

Answer 1

x-15+y-10-x-y+25=0
-25+25=0
0=0
so equation has infinite solutions

Answer 2

Result: 0

How I get it:

x-15+y-10=x+y-25 ; I leave all the x and y in one side of the equallity:

-15-10+25= x+y-x-y ; -25+25=x-x+y-y ; This results in 0