well, pick the two numbers, and make equations with them

example, i pick 1 and 7, because i had 1 sandwich for breakfast this morning and your name is kelmo7. and just because, let x = 1 and y = 7

ok, so 2(1) + 3(7) = 23

so my first equation is 2x + 3y = 23

another random arrangment:

5(1) - 2(7) = -9

so another equation is 5x - 2y = -9

so my system is:

2x + 3y = 23 ...................(1)

5x - 2y = -9 ....................(2)

come up with another system