JEE Math Practice Question
If the system of equations $$x+y+a z=b$$ $$2 x+5 y+2 z=6$$ $$x+2 y+3 z=3$$ has infinitely many solutions, then $$2 a+3 b$$ is equal to :
- A.28
- B.25
- C.20
- D.23
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