Respuesta :

Answer:

15

Step-by-step explanation:

First add 20 to both sides to get x/3 = 5

Then multiply both sides by 3 to get 15.

You can check it by substituting it into the equation

15/3 - 20 = -15

5 - 20 = -15

-15 = -15

TheLazyNobita

Step-by-step explanation:

x/3 - 20 = -15

x/3 = -15 + 20

x/3 = 5

x = 15

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