Respuesta :

Answer:

r = 7

Step-by-step explanation:

60 = -24 + 12r​

+24  +24

84 = 12r

84 ÷ 12 = r

7 = r

Check:

60 = -24 + 12r

-24 + 12(7)

-24 + 84 = 60

Answer:

7

Step-by-step explanation: