Respuesta :

Answer:

  y = -6

Step-by-step explanation:

y is multiplied by 3 and 20 is added to the sum. We undo these operations in reverse order.

First we subtract 20 from both sides of the equation:

  3y = -18

Then we divide both sides of the equation by 3 to undo the multiplication.

  y = -18/3 = -6

The solution is y = -6.