Mejor respuesta

Kenyigg
1

Solución :

Tenemos :

AC = AE + EC

128 = x + 5y + EC

AE = EC

x + 5y = EC

128 = x + 5y + x + 5y

128 = 2x + 10y

64 = x + 5y

BD = BE + ED

120 = 5x - y + ED

BE = ED

5x - y = ED

120 = 5x - y + 5x - y

120 = 10x - 2y

60 = 5x - y

x + 5y = 64

5x - y = 60

x + 5y = 64

5(5x - y) = 5(60)

x + 5y = 64

25x - 5y = 300 - - - - - - - - - - - - - - - - - - - -

26x = 364

x = 364 / 26

x = 14

x + 5y = 64

14 + 5y = 64

5y = 64 - 14

5y = 50

y = 50 / 5

y = 10

AE = x + 5y

AE = 14 + 5(10)

AE = 14 + 50

AE = 64

EC = 64

BE = 5x - y

BE = 5(14) - 10

BE = 70 - 10

BE = 60

ED = 60

x = 14

y = 10

AE = 64

EC = 64

BE = 60

ED = 60.