Respuesta :
Answer:
option b
Step-by-step explanation:
(x - y + 1) - (x + y - 1)
x - y + 1 - x - y + 1
-2y +2
Answer:
B.) -2y + 2.
Step-by-step explanation:
(x - y + 1) - (x + y - 1) First remove the first brackets and distribute the negative over the second set of brackets:
= x - y + 1 - x- y + 1
= -2y + 2.