Question

: y = 5:7, then 7 x - 3 y/14 x + 5y = ?​

Answer 1

Step-by-step explanation:

x:y=5:7

x=5k and y=7k for some integer k.

therefore,

7x-3y/14x+5y

=(7×5k) - (3×7k)/ (14×5k) + (5×7k)

=35k-21k/70k+35k

=14k/105k

=14/105

therefore value of 7x-3y/14x+5y = 14/105