This is math can u guys help me with this plss if you have ay questions ask me in the question comment section i just need these two question pls help if you know 8th grade math pls help

So this may not be correct but I tried so here’s my thought process

1. x - 2y = 3
2. 3x + 2y = 8
3. 2x + 3y = 13
4. 2x - 3y = 19

1. X = 9 Y = 3
2. X = 2 Y = 1
3. X = 2 Y = 3
4. X = 17 Y = 5

The question are vague enough to where anything can be put as x and y. These are just some of those results so do take this with a grain of salt. Good luck?

Element 17 is chlorine it is a group 7 element(halogen) and belongs to period 3 of the periodic table

These are the multiples of 15 but what you are probably asking or what are the factors of 15