perhatikan gambar disamping,tentukan nilai x dan y

[tex] \frac{CD}{CA} = \frac{CE}{CB} = \frac{DE}{AB} [/tex]
[tex] \frac{8}{20}= \frac{10}{10+x} = \frac{7}{y} [/tex]

[tex] \frac{8}{20}= \frac{10}{10+x} [/tex]
8(10+x) = 20×10
80+8x = 200
8x = 120
x = 15

[tex] \frac{10}{25} = \frac{7}{y} [/tex]
10×y = 25×7
10y = 175
y = 17,5