Respuesta :

Amphitrite1040
[tex]52 = 50 \\ 39 = 40 \\ 52 + 39 = 91 \\ 50 + 40 = 90 [/tex]

So, the rounding/compatible numbers to the estimation for the sum would most likely be: [tex]90[/tex]

[tex]Answer: 90 [/tex]