Question

if (a+b+c+d):(a+b-c-d) =(a-b+c-d):(a-b-c+d),prove that a:b=c:d​

Answer 1

Answer:

see the solution carefully

Step-by-step explanation:

I've used Componendo and Dividendo

Answer 2

Your answer is given above.

Hope you find it helpful.