If the system of equations x-2y+3z=9 2x+y+z=b x-7y+az=24, has infinitely many solutions, then a – b is equal...

Question

If the system of equations x-2y+3z=9 2x+y+z=b x-7y+az=24, has infinitely many solutions, then a – b is equal to __________.

Accepted Answer

5

JEE Main 2020 Mathematics question