Respuesta:
20
Explicación paso a paso:
AB = 3BE
BC + 3 DE = 20
a + 3 (c) = 20
Si AC = 80 3a + 3b + 20 = 80
3x + a = 80 3a + 3b = 80-20
3( a+b+c) +a= 80 3( a+ b) = 60
3a+ 3b + 3c+ a= 80 a + b = 20 Entonces BD = 20
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Respuesta:
20
Explicación paso a paso:
AB = 3BE
BC + 3 DE = 20
a + 3 (c) = 20
Si AC = 80 3a + 3b + 20 = 80
3x + a = 80 3a + 3b = 80-20
3( a+b+c) +a= 80 3( a+ b) = 60
3a+ 3b + 3c+ a= 80 a + b = 20 Entonces BD = 20