Respuesta :

Answer:

15

Step-by-step explanation:

In a Parallelogram the sides opposite to each other are equal.

So,

5y - 20 = 2y + 25

⇒5y - 2y = 25 + 20

⇒ 3y = 45

⇒ y = [tex]\frac{45}{3}[/tex]

⇒ y = 15

Answer:

y = 15.

Step-by-step explanation:

Opposite sides are equal so we have the equations:

3x + 7 = 5x - 17

5y - 20 = 2y + 25

From the second  equation:

3y = 45

y = 15  answer.