Respuesta :

Greetings from Brasil....

Looking at the figure we can say that:

DF = DE + EF

and

DF = 9X - 15

DE = 4X + 10

EF = 2X - 1

So

DF = DE + EF

9X - 15 = (4X + 10) + (2X - 1)

X = 8 and

DF = 9X - 15

DF = 57

Ver imagen tomson1975
ACCESS MORE
ACCESS MORE
ACCESS MORE
ACCESS MORE