Question

if (k,k/2)is the solution of equation 3x+5y=22 then value of k is_______(5,6,7)​

Answer 1

2x+ay=5 has (1,−1) as its solution

∴2×1+a(−1)=5

⇒2−a=5

⇒a=−3

∴2x−3y=5

other solutions are (10,5) and (25,15)

∵2×10−3×5=20−15=5

and ∵2×25−3×15=50−45=5

Answer 2

Answer:

its ans is 5

Step-by-step explanation:

hope it helps