Respuesta :

Answer:

x=10

Step-by-step explanation:

1/2x+15=20

1/2x=20-15

1/2x=5

x=5/(1/2)

x=(5/1)(2/1)

x=10/1

x=10

1/2x=20-15

1/2x=5

5/1 x 2/1 is 10/1

x= 10