Question

(a-b) (c-d) /(b-c) (d-a) 2020/2021 then the value of (a-c)(b-d) /(a-b) (c-d) is​

Answer 1

Step-by-step explanation:

As gcd(2020,2021)=1

(a-b)(c-d)=2020

(b-c)(d-a)=2021=(a-b)(c-d)+1

bd+ac-ab-cd=ac+bd-ad-bc+1

a(d-b)+c(b-d)=1

(a-c)(b-d)=-1

(a-c)(b-d)/(a-b)(c-d)= -1/2020