Question

Si (a/b)=3/5 y (a/c)=5/7 el valor de (b/c)=

Answer 1

a/b = 3/5
                 a = 3b/5
a/c = 5/7
                (3b/5)/c = 5/7
                 3b/5c = 5/7
                   b/c = 5.5/3.7
                         = 25/21
b/c = 25/21