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……………..
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……………..
Asked by Shiksha User
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1 Answer
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kx + y + 2z = 1. (i)
3x – y – 2z = 2 . (ii)
2x – 2y – 4z = 3. (iii)
(ii) × 5 (i) (iii) × 3 (15 – k) = 6
K = 21
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