Question

if a:b=c:d show that 3a-5b :3c-5d =3a+5b:3c+5d​

Answer 1

Answer:

Given

ba=dc

5b3a=5d3c (Multiplying both by 3/5)

3a−5b3a+5b=3c−5d3c+5d (By compnendo and dividend)

3a+5b3a−5b=3c+5d3c−5d (By alternendo)