Respuesta :

Answer:

12

Step-by-step explanation:

  1. [tex]5x + x = 72 \\ 6x = 72 \\ 6x \div 6 = 72 \div 6 \\ x = 12[/tex]
  2. the man is 5× as old as his son if the sum of the age is
  3. 5×+×=72
  4. 72÷6
  5. 12