Question

if a:b=c:d then prove a+b:a-b=c+d:c-d​

Answer 1

Answer:

Step-by-step a explanation:

Let a/b =k and c/d=k

a+b/a-b= c+d/c-d

bk+b/bk-b = dk+d/dk-d

B(k+1)/b(k-1) = d(k+1)/d(k-1)

(K+1)/k-1 = k+1/k-1

Answer 2

Answer:

Step-by-step explanation: