JEE Main 2021 Mathematics question
If the system of equations kx + y + 2z = 1, 3x – y – 2z = 2, –2x – 2y – 4z = 3 has infinitely many solutions, then k is equal to.
Answer: 21
If the system of equations kx + y + 2z = 1, 3x – y – 2z = 2, –2x – 2y – 4z = 3 has infinitely many solutions, then k is equal to.