Respuesta :

Answer:

y = 35

Step-by-step explanation:

Adding both sides by 21, the answer will be 35.

Steps
y-21=14
+21=+21
y=35
(You would move the 21 to the other side and flip to a positive)

The positive 21 would cancel the negative 21 and just add the 21 and 14

RELAXING NOICE
Relax