3x−y=813^{x-y}=813x−y=81,3x+y=7293^{x+y}=7293x+y=729ആയാൽ x ൻ്റെ വില എന്ത് A1B2C4D5Answer: D. 5 Read Explanation: 3x−y=81 ⟹ 3x−y=343^{x-y}=81\implies3^{x-y}=3^43x−y=81⟹3x−y=34 3x+y=729 ⟹ 3x+y=363^{x+y}=729\implies3^{x+y}=3^63x+y=729⟹3x+y=36 3x−y=34 ⟹ x−y=43^{x-y}=3^4\implies x-y=43x−y=34⟹x−y=4 3x+y=36 ⟹ x+y=63^{x+y}=3^6\implies{x+y}=63x+y=36⟹x+y=6 x=(6+4)/2=5x=(6+4)/2=5x=(6+4)/2=5 Read more in App
