Respuesta :

OB + BR = OR (because the line would go O, B, R and OR encompasses the whole thing with B in the middle.
So 2x + 1 (OB) + 3x -10 (BR) = OR
2x + 1 + 3x -10 = OR
(Simplify)
5x - 9 = OR
ACCESS MORE
ACCESS MORE
ACCESS MORE
ACCESS MORE