Question

what is another solution of the equation
x+y=7

Answer 1

what solution do you already have?

Answer 2

x+y=7 is all its saying

Answer 3

they ask
***what is another solution***

that usually means that you already have a solution.

Answer 4

but all solutions are (x,y) pairs that make the equation true.

one way to find a solution is set x to a (simple) number, and figure out what number to use for y to make the equation true. then those two numbers (x,y) are a solution