For what value of k will the following pair of linear equations have infinitely many solutions?

2x - 3y = 7


(k + 1)x + (1 - 2k)y = (5k - 4)

Given:

Equation 1: 2x - 3y = 7


Equation 2: (k + 1)x + (1 - 2k)y = (5k - 4)


Both the equations are in the form of :


a1x + b1y = c1 & a2x + b2y = c2 where


For the system of linear equations to have infinitely many solutions, we must have


………(i)


According to the problem:


a1 = 2


a2 = k + 1


b1 = -3


b2 = 1-2k


c1 = 7


c2 = 5k-4


Putting the above values in equation (i) we get:




2(1-2k) = -3(k + 1)



2-4k = -3k-3



k = 5



The value of k for which the system of equations has infinitely many solutions is k = 5


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