A and B in algebra stand for any variables of real numbers. A real number is a value of a continuous quantity that can represent a distance along a line. So if you see A and B in doing your algebra it is just a representation of a value that you need to find.
Conocieron, the kids visited their grandparents in Columbia last year
Cierro
vuelvo
quitarse
me visto
pido
dormir
Answer:
Vivo en un departamento con balcones pequeños