Answer:
too lazy to do the math but yk
Explanation:
ok so first you wanna make sure you isolate variables, to find x you get
2x+7=5y-9
2x=5y-2
x=(5y-2)/2
plug that into the equation, then you get the y value, which you can put into the equation again (by equation i mean 2x+7=5y-9)
then you have both x and y