`(p+q)/(pq)=2 , (p-q)/(pq)=6` then find the value of `p&q`

If p:q=5:7 and p-q=-4 then find the value of 3p+4q.

If (p+q)^(2)=78 and (p-q)^(2)=50 , what is the value of pq?

If p:q = 5:7 and p-q = -4 , then find the value of 3p+4q.

If x=(6pq)/(p+q) , then find the value of (x+3p)/(x-3p) +(x+3q)/(x-3q)

(p-q)^(2)+4pq

If (p ^(2) + q ^(2)) // (r ^(2) + s ^(2)) = (pq) //(rs), then what is the value of (p-q)/(p+q) in terms of r and s ?

If the p^(th) term of an A.P.is (1)/(q) and q^(th) term is (1)/(p) and sum of pq terms is 25pq, then find the value of pq.

If 2p + 3q = 12 and 4p^(2) + 4pq - 3q^(2) = 126 , then what is the value of p + 2q ?