Respuesta :

Let's say David's age right now is x years
x + 6 = 2(x - 7)
x + 6 = 2x - 14
x = 20
Therefor David is 20 years old
riahlucs24
x-6=2x-14
x=20
Dave is 20 years old 
hope this helped 

Otras preguntas