Question

If x=2k + 1, y=k - 1 is a solution of the equation 2x - 3y + 5=0. find the value of k.​

Answer 1

Value of k is -12.....


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Answer 2

Answer:

$x = 2k + 1 \\ y = k - 1 \\ given$

if u substitute the givens in the eqn we will get..

$2(2k + 1) - 2(k - 1) + 5 = 0 \\ 4k + 2 - (2k - 2) + 5 = 0 \\ 4k + 2 - 2k + 2 + 5 = 0$

then collect like terms

$4k - 2k + 2 + 2 + 5 = 0 \\ 2k + 4 + 5 = 0 \\ 2k + 9 = 0$

$2k = - 9 \\ k = \frac{ - 9}{2}$