JEE Main 20204 Sep, Morning shiftMathematicsMediumMatrices and Determinants245× since 2002
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.........
JEE Main 2020 · 4 Sep, Morning shift · Q31