Respuesta :

Answer:

B. 6.2

Step-by-step explanation:

[tex]5(5 + x) = 4(4 + 10) \\ \\ 25 + 5x = 4(14) \\ \\ 25 + 5x = 56 \\ \\ 5x = 56 - 25 \\ \\ 5x = 31 \\ \\ x = \frac{31}{5} \\ \\ x = 6.2[/tex]