For which values of a and b will the following pair of linear equations has infinitely many solutions ? `x + 2y = 1` ` (a-b) x + (a + b ) y = a + b -2`

For what values of a and b does the following pair of linear equations have infinitely many solutions ? 2x + 3y = 7 a (x + y) - b (x - y) = 3a + b - 2

For which values of a and b does the following pair of linear equations have an infinite number of solutions ? 2x + 3y =7 , (a - b) x + (a + b) y = 3a + b - 2 .

(i) For which values of a and b does the following pair of linear equations have an infinite number of solutions? 2x + 3y = 7 (a - b)x + (a + b)y = 3a + b - 2 (ii) For which value of k will the following pair of linear equations have no solution? 3x + y = 1 (2k - 1)x + (k - 1)y = 2k + 1

(i) For which values of a and b does the following pair of linear equations have an infinite number of solutions? 2x + 3y = 7 (a - b)x + (a + b)y = 3a + b - 2 (ii) For which value of k will the following pair of linear equations have no solution? 3x + y = 1 (2k - 1)x + (k - 1)y = 2k + 1

For which values of a and b does the following pair of linear equations have an infinite number of solutions ? 2x+3y=7 (a-b)x+(a+b)y=3a+b-2

For which values of a and b does the following pair of linear equations have an infinite number of solutions? 2x+3y=7 (a-b)x+(a+b)y=3a+b-2

For which values of a and b does the following pair of linear equatons have an infinite number of solutions ? 2x+3y=7 (a-b)x+(a+b)y=3a+b-2

Find the values of k for which the following pair of linear equations has infinitely many solutions : 2x - 3y = 7, ( k + 1 ) x + ( 1 - 2k) y = ( 5k - 4) .

For which values of a and b does the following pair of linear equations have an infinite number of solution?2x+3y=7 (a-b)x+(a+b)y=3a+b-2